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	<title>Animal Aqua &#187; Fish</title>
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		<title>How to setup the aquarium ?</title>
		<link>http://www.animalaqua.com/how-to-setup-the-aquarium/</link>
		<comments>http://www.animalaqua.com/how-to-setup-the-aquarium/#comments</comments>
		<pubDate>Sat, 09 Feb 2008 11:07:55 +0000</pubDate>
		<dc:creator>AnimalAqua</dc:creator>
				<category><![CDATA[Fish]]></category>
		<category><![CDATA[apperception]]></category>
		<category><![CDATA[centermost]]></category>
		<category><![CDATA[gal tank]]></category>

		<guid isPermaLink="false">http://www.animalaqua.com/how-to-setup-the-aquarium/</guid>
		<description><![CDATA[You should alluringly amount out area you will abode your angle catchbasin afore you accompany your new angle home. An aquarium can be the highlight of your active allowance and are additionally a abundant way to brighten up active spaces. Aloof accumulate a few things in mind. Absolute sunlight will calefaction the water, which isn&#8217;t [...]


Related posts:<ol><li><a href='http://www.animalaqua.com/how-to-make-your-dog-come-to-you/' rel='bookmark' title='How to make your dog come to you'>How to make your dog come to you</a></li>
</ol>]]></description>
			<content:encoded><![CDATA[<p><img src="http://www.animalaqua.com/wp-content/uploads/2008/02/aquariumfishtank.jpg" alt="aquarium" align="left" />You should alluringly amount out area you will abode your angle catchbasin afore you accompany your new angle home.</p>
<ol>
<li> An aquarium can be the highlight of your active allowance and are additionally a abundant way to brighten up active spaces. Aloof accumulate a few things in mind. Absolute sunlight will calefaction the water, which isn&#8217;t acceptable for goldfish. Sunlight additionally makes algae abound quickly. So it&#8217;s best to accumulate your aquarium abroad from absolute sunlight.</li>
<li>Additionally accumulate the aquarium abroad from heaters and air conditioning vents. Abode the aquarium finer on a stand, if not, use a athletic collapsed surface.</li>
<li>Agreement your catchbasin in the best accessible ambiance is essential. A angle catchbasin can be the centermost of absorption in a allowance and at the aforementioned time be a adequate affection as well. Angle owners will acquaint you that watching angle bathe in a catchbasin is therapeutic. This is actual true, in fact, you can absorb hours aloof watching them.</li>
<li>Your catchbasin will charge a athletic base. You can buy a readymade angle from a pet store. If you don&#8217;t appetite to buy a stand, accomplish abiding that you put it on a able and collapsed surface.</li>
<li>Accumulate in apperception that anniversary gallon of baptize weighs about eight pounds. So if u accept a 30 gal tank, you will charge a abject that can booty 240 pounds of weight for your angle to alive continued and healthy.</li>
</ol>
<p><strong>Getting started</strong></p>
<p>Once you accept bought all the equipment, you accept absitively area to accumulate the aquarium. You will charge to accumulate and install the aquarium. Ample the aquarium with tap baptize and add baptize conditioner based on the abundance of baptize as per the instructions. Let it run for three canicule afore putting in the fish.</p>
<p><strong>Choosing a area for the tank</strong></p>
<p>After selecting your aquarium, you accept to baddest the abode area it should place. You charge to accumulate the afterward in apperception while allotment a area for the tank:</p>
<ol>
<li>Do not abode the catchbasin in absolute sunlight to advance a connected temperature of 74-75 amount Fahrenheit. Sunlight will account the catchbasin baptize to calefaction up.</li>
<li>Do not abode the catchbasin abreast a boiler or any added antecedent of heat.</li>
<li>Do not abode the catchbasin abreast an air-conditioning vent.</li>
<li>Do not abode the catchbasin in a allotment of the abode that is actual algid or gets drafts.</li>
<li>Abode the catchbasin in a area that is abutting to a baptize antecedent and it would be acceptable for you to change the water.</li>
<li>You should additionally be able to account the filters calmly and accomplish accepted care.</li>
<li>The abode area you abode your catchbasin should be almost quiet. Loud noises will account accent and you should accumulate your catchbasin abroad from stereos and television sets.</li>
<li>Do not tap the bottle catchbasin often. This will affright your fish. If you see a angle pond about with hasty motions or jumping, it may be because it is frightened. After allotment the abode because all the aloft declared points, abode your catchbasin on a able board table. Your table admeasurement should be greater than your aquarium size.</li>
</ol>
<p><strong>Fix the clarify in the aquarium</strong></p>
<p>Select the clarify according to your aquarium admeasurement and type. You can seek admonition to baddest the acceptable clarify for your aquarium. There are too abounding blazon of filters accessible in the market. It is bigger to get complete capacity of clarify that you accept purchased. Apprenticeship to fix up the clarify differs from cast to cast and blazon of filters. So you accept to chase the architect apprenticeship to fix the clarify in your aquarium.</p>
<p><strong>Fix the ablaze and boiler in your aquarium</strong></p>
<p>Fix the ablaze in the catchbasin with advice of the apprenticeship accustomed by manufacturer. Ablaze adjustment helps to adapt day and night for angle and plants. It additionally helps to see your angle central the tank. It adds to the adornment of the aquarium. You can about-face on the ablaze amid 8 to 10 hours in the day and about-face off the ablaze during the night. After acclimation the light, you accept to fix the boiler in your aquarium. It is all-important to fix a boiler with thermostat in the tank. The thermostat is appropriate to analysis the catchbasin from overheating or accidental appear added chillness. Maintaining a constant temperature for your angle is required. The aberration of temperature in the catchbasin may advance to ill bloom to your fish. Accumulate watching the temperature central the tank.</p>
<ul>
<li><strong>10 to 20 gallon</strong> &#8211; 50 watt heaters</li>
<li><strong>25 to 30 gallon</strong> &#8211; 75 watt heaters</li>
</ul>
<p><strong>Place the gravel</strong></p>
<p>Before agreement the alluvium in your tank, you accept to ablution alluvium with alluvium washer. It removes dust and bits from gravel. Now you can abode the alluvium in the tank. Use of angular-shaped alluvium helps in accustomed biological filtration in the aquarium. Abode the alluvium 2 to 3 inches in the aback and abruptness appear the advanced in case of beneath alluvium filter.</p>
<p><strong>Adding plants and added accessories</strong></p>
<p>Select the plants and added items which are acceptable for your angle and abode those items in the aquarium. In case of application bogus and bogus ornaments, you accept to ablution with baptize afore agreement central the tank. It is bigger to use alive plants for beginners as they aid in nitrogen aeon (water affection maintenance) in the baptize tank. Do not abode the plants actual abutting to anniversary other. Don&#8217;t dump too abounding items in the aquarium.</p>
<p><strong>Add baptize and blockage alive of all equipments</strong></p>
<p>Your aquarium looks actual affable with decorations, light, boiler and clarify fixed. Now, it is time to ample baptize in your tank. You should not cascade baptize anon into the tank. It may afflict your arrange central the aquarium. You should booty baby basin and abode it at the centermost of the tank. Now you can cascade baptize into the basin slowly. Don&#8217;t ample baptize till the bend of the aquarium. You can ample the baptize till it alcove 90 percent of the catchbasin size. Now you should about-face on the light, boiler and filters. Allow the heaters, light, filters to run for two days. Analysis for the able activity of temperature and filtration. After ensuring aggregate is alive properly, acquirement angle and add it in the aquarium.</p>
<p><strong>First Angle for Cool Baptize Aquariums</strong></p>
<p>Once all the equipments are in alive condition, it is an ideal time to buy a Goldfish from any pet shop. You can put your angle into the aquarium by amphibian method.</p>
<p><strong>Add your angle into the aquarium.</strong></p>
<p>To alpha with, do not buy any big-ticket or aerial array of Goldfish. After your new aquarium accessories has been active for a brace of days, alpha with the bargain array of Goldfish such as Comet. Buy three of four of them. Don&#8217;t add any added angle for at atomic three weeks. This is important as in the aboriginal 2 or 3 weeks, the baptize may get blurred or barmy and accept an odor. This is generally referred to as the new angle catchbasin syndrome. After the aboriginal three weeks (if your angle survives), your angle will achieve bottomward and you can buy added fishes for your aquarium. But do not add too abounding fishes at the aforementioned time. Add a brace every few weeks. Aloof accumulate in apperception that anniversary angle needs a gallon of baptize for every inch of its length.</p>


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</ol></p>]]></content:encoded>
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		</item>
		<item>
		<title>Goldfish</title>
		<link>http://www.animalaqua.com/goldfish/</link>
		<comments>http://www.animalaqua.com/goldfish/#comments</comments>
		<pubDate>Thu, 07 Feb 2008 02:40:23 +0000</pubDate>
		<dc:creator>AnimalAqua</dc:creator>
				<category><![CDATA[Fish]]></category>
		<category><![CDATA[carassius auratus]]></category>
		<category><![CDATA[Fins]]></category>
		<category><![CDATA[fish]]></category>
		<category><![CDATA[genetic mutations]]></category>
		<category><![CDATA[Mutations]]></category>
		<category><![CDATA[song dynasty]]></category>

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		<description><![CDATA[History of Goldfish Goldfish is the domesticated subspecies of Carassius auratus, the gibel carp is endemic to China and shows a wide range of morphological variation when raised in different environments. Goldfish are an intrinsic part of Chinese culture. They are depicted in a number of things ranging from silk and paintings to ceramics and [...]


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			<content:encoded><![CDATA[<p><img src="http://www.animalaqua.com/wp-content/uploads/2008/02/goldfishgoldfish11.jpg" alt="Goldfish" align="left" /><strong>History of Goldfish</strong></p>
<p>Goldfish is the domesticated subspecies of Carassius auratus, the gibel carp is endemic to China and shows a wide range of morphological variation when raised in different environments. Goldfish are an intrinsic part of Chinese culture. They are depicted in a number of things ranging from silk and paintings to ceramics and jade carvings. In the 17th century, Goldfish popularity spread to the world with the fish being exported to Japan, Portugal and Holland. Goldfish were exported to America in the late 19th century.</p>
<p><strong>Natural Habitat</strong></p>
<p>Wild Goldfish, when it&#8217;s in native conditions require minimum temperature of 10°C to 32°C to survive. They live in rivers, streams, ponds, lakes, ditches and even in stagnant water.</p>
<p><strong>Size and Weight</strong></p>
<p>Wild Goldfish grows up to a length of 30 cm. They weigh 2.5 kg and live between 2 and 10 years.</p>
<p><strong>Mutations</strong></p>
<p>The Chinese have kept Goldfish as pets for centuries. Breeders for almost 2000 years have successfully brought about new species of the fish through genetic mutations. This is some breeding experiments :</p>
<ul>
<li>In the Chun dynasty (between the 3rd and 5th century AD), breeders first recorded the gold color on the scales of this fish.</li>
<li>Between the 12th and the 13th century, during the reign of the Nan Song dynasty, goldfish became common pets. For the first time, white and red-and-white colors were noticed.</li>
<li>During the Ming dynasty (1368-1644) goldfish made their way into the Chinese homes. They were put inside glass bowls. This led to a number of mutations, of species that wouldn&#8217;t have otherwise survived in ponds.</li>
<li>In 1590, the Red-capped mutation of Goldfish was observed and in 1592, Globe Eyes were recorded.</li>
<li>The mutation in 1596 recorded matt scales and calico coloration. Goldfish now became the fish of common man.</li>
<li>During the Chun dynasty (between the 17th and 20th century), exotic breed of Goldfish were recorded. These include the bronze and blue Goldfish.</li>
<li>Between the late 19th and the early 20th century, a number of new species were recorded. These include Oranda/Tigerhead (in 1893), Pompon, Comet, Veiltail and Pearl scale (early 1900s), Shubunkin (early 20th century), Bubble eye (1908), Curled operculum (1911).</li>
<li>Mutations that occur naturally in the wild are not all that strong and the new species has a tendency to slip back to the original wild variety when further bred. Mutations bred in captivity are dominant.</li>
</ul>
<p><strong>Golfish Data</strong></p>
<ul>
<li><strong> Anal Fin</strong> &#8211; The lower fin which appears before tail</li>
<li><strong>Caudal Fin</strong> &#8211; The tail is called as caudal fin</li>
<li><strong>Dorsal Fin</strong> &#8211; The fin which appear at the top of the rear side</li>
<li><strong>Pectoral Fins</strong> &#8211; Fins which appear at the front</li>
<li><strong>Pelvic Fins</strong> &#8211; Ventral Fins which appear behind the pectoral fin</li>
</ul>
<p><object width="580" height="460"><param name="movie" value="http://www.youtube-nocookie.com/v/hwKM7V0R3-Y?fs=1&amp;hl=en_US&amp;rel=0&amp;color1=0xe1600f&amp;color2=0xfebd01"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube-nocookie.com/v/hwKM7V0R3-Y?fs=1&amp;hl=en_US&amp;rel=0&amp;color1=0xe1600f&amp;color2=0xfebd01" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="580" height="460"></embed></object></p>


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		</item>
		<item>
		<title>Amazing Twin Arowana Fish</title>
		<link>http://www.animalaqua.com/amazing-twin-arowana-fish/</link>
		<comments>http://www.animalaqua.com/amazing-twin-arowana-fish/#comments</comments>
		<pubDate>Thu, 06 Dec 2007 17:47:02 +0000</pubDate>
		<dc:creator>AnimalAqua</dc:creator>
				<category><![CDATA[Fish]]></category>
		<category><![CDATA[amazing twin]]></category>
		<category><![CDATA[aquaria]]></category>
		<category><![CDATA[body]]></category>
		<category><![CDATA[shah]]></category>
		<category><![CDATA[shah alam malaysia]]></category>
		<category><![CDATA[Twin]]></category>

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		<description><![CDATA[Twin body arowana fish videos. This video i got when i visit shah alam malaysia aquaria at seksyen 2. Related posts:Twin Head Arowana Fish Dragon Fish Clown Fish Natural History Fish Form And Function Of Fish


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</ol>]]></description>
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<p>Twin body <strong><a href="http://www.animalaqua.com/twin-head-arowana-fish/">arowana</a></strong> fish videos. This video i got when i visit shah alam malaysia aquaria at seksyen 2.</p>


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</ol></p>]]></content:encoded>
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		<item>
		<title>Sharks Video</title>
		<link>http://www.animalaqua.com/sharks-video/</link>
		<comments>http://www.animalaqua.com/sharks-video/#comments</comments>
		<pubDate>Sat, 22 Sep 2007 11:40:16 +0000</pubDate>
		<dc:creator>AnimalAqua</dc:creator>
				<category><![CDATA[Fish]]></category>
		<category><![CDATA[information]]></category>
		<category><![CDATA[shark teeth]]></category>
		<category><![CDATA[sharks]]></category>
		<category><![CDATA[show]]></category>

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		</item>
		<item>
		<title>Twin Head Arowana Fish</title>
		<link>http://www.animalaqua.com/twin-head-arowana-fish/</link>
		<comments>http://www.animalaqua.com/twin-head-arowana-fish/#comments</comments>
		<pubDate>Tue, 20 Mar 2007 15:26:57 +0000</pubDate>
		<dc:creator>AnimalAqua</dc:creator>
				<category><![CDATA[Fish]]></category>
		<category><![CDATA[Arowanas]]></category>
		<category><![CDATA[dragon]]></category>
		<category><![CDATA[dragon fish]]></category>
		<category><![CDATA[Head]]></category>
		<category><![CDATA[Twin]]></category>

		<guid isPermaLink="false">http://animal.alltheline.com/?p=334</guid>
		<description><![CDATA[Twin head arowana fish video. Arowanas, also known as aruanas or arawanas or u can call dragon fish. Read more about arowana fish here or here. Related posts:Dragon Fish Clown Fish General Features Of Fish Natural History Fish Form And Function Of Fish


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</ol>]]></description>
			<content:encoded><![CDATA[<p><object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" width="580" height="460" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,40,0"><param name="allowFullScreen" value="true" /><param name="allowscriptaccess" value="always" /><param name="src" value="http://www.youtube-nocookie.com/v/SqDQx7UaBLI?fs=1&amp;hl=en_US&amp;rel=0&amp;color1=0xe1600f&amp;color2=0xfebd01" /><param name="allowfullscreen" value="true" /><embed type="application/x-shockwave-flash" width="580" height="460" src="http://www.youtube-nocookie.com/v/SqDQx7UaBLI?fs=1&amp;hl=en_US&amp;rel=0&amp;color1=0xe1600f&amp;color2=0xfebd01" allowscriptaccess="always" allowfullscreen="true"></embed></object></p>
<p>Twin head arowana fish video. Arowanas, also known as aruanas or arawanas or u can call dragon fish. Read more about arowana fish <strong><a href="http://en.wikipedia.org/wiki/Arowana" target="_blank">here</a></strong> or <strong><a href="http://animalaqua.com/?p=44">here</a></strong>.</p>


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<li><a href='http://www.animalaqua.com/clown-fish/' rel='bookmark' title='Clown Fish'>Clown Fish</a></li>
<li><a href='http://www.animalaqua.com/general-features-fish/' rel='bookmark' title='General Features Of Fish'>General Features Of Fish</a></li>
<li><a href='http://www.animalaqua.com/natural-history-fish/' rel='bookmark' title='Natural History Fish'>Natural History Fish</a></li>
<li><a href='http://www.animalaqua.com/form-and-function-fish/' rel='bookmark' title='Form And Function Of Fish'>Form And Function Of Fish</a></li>
</ol></p>]]></content:encoded>
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		<title>Great White Shark</title>
		<link>http://www.animalaqua.com/great-white-shark/</link>
		<comments>http://www.animalaqua.com/great-white-shark/#comments</comments>
		<pubDate>Tue, 20 Mar 2007 15:08:49 +0000</pubDate>
		<dc:creator>AnimalAqua</dc:creator>
				<category><![CDATA[Fish]]></category>
		<category><![CDATA[Great]]></category>
		<category><![CDATA[great white shark]]></category>
		<category><![CDATA[Shark]]></category>
		<category><![CDATA[White]]></category>
		<category><![CDATA[white pointer]]></category>
		<category><![CDATA[white shark]]></category>

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		<description><![CDATA[The great white shark, Carcharodon carcharias, also known as white pointer, white shark, or white death. They have about 3000 teeth, arranged in several rows. Now See the great white shark video. Read more about great white shark here: Related posts:White Shark Great Crested Newt


Related posts:<ol><li><a href='http://www.animalaqua.com/white-shark/' rel='bookmark' title='White Shark'>White Shark</a></li>
<li><a href='http://www.animalaqua.com/great-crested-newt/' rel='bookmark' title='Great Crested Newt'>Great Crested Newt</a></li>
</ol>]]></description>
			<content:encoded><![CDATA[<p><object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" width="580" height="460" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,40,0"><param name="allowFullScreen" value="true" /><param name="allowscriptaccess" value="always" /><param name="src" value="http://www.youtube-nocookie.com/v/O2FInaOCqoo?fs=1&amp;hl=en_US&amp;rel=0&amp;color1=0xe1600f&amp;color2=0xfebd01" /><param name="allowfullscreen" value="true" /><embed type="application/x-shockwave-flash" width="580" height="460" src="http://www.youtube-nocookie.com/v/O2FInaOCqoo?fs=1&amp;hl=en_US&amp;rel=0&amp;color1=0xe1600f&amp;color2=0xfebd01" allowscriptaccess="always" allowfullscreen="true"></embed></object></p>
<p>The great white shark, Carcharodon carcharias, also known as white pointer, white shark, or white death. They have about 3000 teeth, arranged in several rows. Now See the great white shark video. Read more about great white shark <strong><a href="http://animalaqua.com/?p=43">here</a></strong>:</p>


<p>Related posts:<ol><li><a href='http://www.animalaqua.com/white-shark/' rel='bookmark' title='White Shark'>White Shark</a></li>
<li><a href='http://www.animalaqua.com/great-crested-newt/' rel='bookmark' title='Great Crested Newt'>Great Crested Newt</a></li>
</ol></p>]]></content:encoded>
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		<title>Devil&#8217;s Hole Pupfish</title>
		<link>http://www.animalaqua.com/devils-hole-pupfish/</link>
		<comments>http://www.animalaqua.com/devils-hole-pupfish/#comments</comments>
		<pubDate>Thu, 18 Jan 2007 11:58:08 +0000</pubDate>
		<dc:creator>AnimalAqua</dc:creator>
				<category><![CDATA[Fish]]></category>
		<category><![CDATA[hole pupfish]]></category>
		<category><![CDATA[level]]></category>
		<category><![CDATA[nye county nevada]]></category>
		<category><![CDATA[Pool]]></category>
		<category><![CDATA[water]]></category>
		<category><![CDATA[water level fluctuations]]></category>

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		<description><![CDATA[Cyprinodon diabolis The Devil&#8217;s Hole pupfish gets its name from the freshwater limestone cave pool in which it lives. Its entire life cycle is spent largely within the boundaries of a shelf near the surface of the pool. If conditions on the shelf are less than ideal, the pupfish is in immediate danger. The Devil&#8217;s [...]


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<li><a href='http://www.animalaqua.com/animal-life-from-congo-river/' rel='bookmark' title='Animal Life From Congo River'>Animal Life From Congo River</a></li>
</ol>]]></description>
			<content:encoded><![CDATA[<p><strong>Cyprinodon diabolis</strong></p>
<p><img src="http://www.animalaqua.com/wp-content/uploads/2007/01/img_0005.jpg" title="devils" alt="devils" align="left" border="2" />The Devil&#8217;s Hole pupfish gets its name from the freshwater limestone cave pool in which it lives. Its entire life cycle is spent largely within the boundaries of a shelf near the surface of the pool. If conditions on the shelf are less than ideal, the pupfish is in immediate danger.  The Devil&#8217;s Hole pupfish has been known since 1891. However, for 40 years it was assumed to be a variant of another well-known species, the desert pupfish. In 1930 its distinctive nature was fully<span id="more-270"></span> realized, and it was named as a separate species. The &#8220;devil&#8221; that the pupfish bears in its common name is not a reflection of its form or habits, but rather of its natural habitat: Devil&#8217;s Hole cave pool in Nye County, Nevada. The narrow but deep dimensions of the pool make diving difficult for those allowed to use it (researchers and others involved in scientific work on the pool and its inhabitants). Devil&#8217;s Hole is 55 feet (17 m) long, 10 feet (3 m) wide, and over 300 feet (90 m) deep. The pupfish has been found at depths of up to 80 feet (25 m). However, much of its everyday life is based around a shallow ledge or shelf measuring 18 by 10 feet (5.5 by 3 m). The Devil&#8217;s Hole pupfish congregate here to spawn and to feed on the tiny aquatic invertebrates that live and feed on an alga) &#8220;mat.&#8221;</p>
<p><strong>Life on the Shelf</strong></p>
<p>The Devil&#8217;s Hole pupfish lives in precarious conditions, and the Devil&#8217;s Hole shelf plays a pivotal role in the survival of the species. As with other species, water level is critical; even a minor drop spells real danger for the pupfish. If the shelf were deeper within Devil&#8217;s Hole, then water level fluctuations would present less of a problem. As it is, a decrease in water level of only 39 inches (100 cm) exposes the shallowest area of the shelf and destroys much of the algal growth. As a result, the invertebrate population is reduced, and the  fish are deprived of a significant part of their food supply. A further reduction in water level, leading to exposure of the whole ledge, would cause the destruction of spawning sites. The result would be possible extinction if levels remained low for any length of time.</p>
<p><strong>The Pupfish and the Law</strong></p>
<p>In 1952 Devil&#8217;s Hole was incorporated into the Death Valley National Monument, offering the cave pool official protection. It took 15 more years for the pupfish to be recognized as an endangered species. However, its newfound legal status, which should have been enough to ensure its continued survival, did not produce the desired results. In what is sometimes reported as a serious error, some of the land in the vicinity of Devil&#8217;s Hole (now known as the Ash Meadows National Wildlife Refuge) passed into private ownership. Within a short time wells had been sunk in the area, with the result that water levels in the subterranean aquifers (water-bearing layers of permeable rock, sand, or gravel) supplying Devil&#8217;s Hole began to suffer. By 1969, 60 percent of the Devil&#8217;s Hole shelf was exposed by the drop in water level, posing a serious threat to the fish. Urgent action was taken. Specimens were transferred to several fishless desert springs, aquarium breeding projects were set up, and a fiberglass ledge with overhead lights was installed at a suitable depth within Devil&#8217;s Hole itself. The last measure proved considerably more successful than the other salvage attempts. After several years of further campaigning, and a series of court hearings, the Devil&#8217;s Hole pupfish obtained its legal lifeline in 1976. The ruling set out to limit the amount of water that could be pumped from the area. The pupfish has experienced further threats since, but has managed to survive with the help of scientists and conservationists.</p>
<p><strong>Conservation Measures</strong></p>
<p>To check natural population levels, researchers carry out a count at least twice a year, diving 80 feet (25 m) to the shelf known as Anvil Rock. They record every fish encountered during the gradual ascent to the surface. In addition, an above-water count of fish on the shallower ledge is carried out. Depending on the time of year, counts vary from under 200 specimens to over 500. The highest numbers are recorded following the spawning season in the summer; they drop off during the winter when the algal mat dies back, largely due to lack of sunlight. A species &#8220;safety net&#8221; can be found in three specially built ponds or &#8220;refugia.&#8221; Each contains subpopulations of pupfish; two of the ponds have about 200 fish, while in the third, breeding has only just begun. As long as conditions in Devil&#8217;s Hole remain within certain limits, it would seem that naturally fluctuating population levels may not adversely affect the continued survival of the species.</p>
<p class="MsoNormal"><strong>Devil&#8217;s Hole pupfis<br />
Cyprinodon diabolis</strong></p>
<ul>
<li>Family: Cyprinodontidae</li>
<li>World population: About 650</li>
<li>Distribution: Devil&#8217;s Hole, Ash Meadows National Wildlife Refuge, Nye County, Nevada</li>
<li>Habitat: Largely confined to shallow water over an algae-covered shelf; specimens also found in deeper water down to 80 ft (25 m). Water temperature about 86Â°F (30Â°C)</li>
<li>Size: Length: males 1 in (2.5 cm); females smaller</li>
<li>form: Relatively large head; dorsal fin set well back on body; lacks pelvic (hip) fins. Males in breeding condition have bluish tinge to body and black edges to the yellowish-golden fins. At other times the body is brown with silvery sides and numerous black specks</li>
<li>Diet: Small, aquatic invertebrate fauna of shelf&#8217;s alga) mat</li>
<li>Breeding: Eggs laid among algae on the shallow spawning shelf from spring into summer</li>
<li>Related endangered species: Other Cyprinodonts, including Cachorrito lodero (Cyprinodon beltrani); Leon Springs pupfish (C. bovinus); Comanche Springs pupfish (C. elegans); Perrito de carbonera (C. fontinahs); Cachorrito cangrejero (C. labiosus); large-scale pupfish (C. macrolepis); Cachorrito gigante (C. maya); Cachorrito de mezquital (C. meeki); Cachorrito cabezon (C. pachycephalus); Pecos pupfish (C. pecoensis); Owen&#8217;s pupfish (C. radiosus); Cachorrito boxeador (C. simus); Cachorrito de dorsal larga (C. verecundus); and Cachorrito de charco azul (C. veronicae)</li>
</ul>


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		<title>Common Sturgeon</title>
		<link>http://www.animalaqua.com/common-sturgeon/</link>
		<comments>http://www.animalaqua.com/common-sturgeon/#comments</comments>
		<pubDate>Tue, 12 Dec 2006 07:37:01 +0000</pubDate>
		<dc:creator>AnimalAqua</dc:creator>
				<category><![CDATA[Fish]]></category>
		<category><![CDATA[lake ladoga]]></category>
		<category><![CDATA[sturgeon population]]></category>
		<category><![CDATA[sturgeon species]]></category>

		<guid isPermaLink="false">http://animal.alltheline.com/?p=56</guid>
		<description><![CDATA[Acipenser sturio &#8211; It is difficult to imagine that some European rivers can hide giant fish measuring up to 20 feet (6 m) long that are capable of producing many millions of eggs in a single spawning. Such a fish is the common sturgeon. In spite of its prolific breeding habits, the species is at [...]


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<li><a href='http://www.animalaqua.com/natural-history-fish/' rel='bookmark' title='Natural History Fish'>Natural History Fish</a></li>
</ol>]]></description>
			<content:encoded><![CDATA[<p><img class="alignleft size-full wp-image-1163" title="Common Sturgeon" src="http://www.animalaqua.com/wp-content/uploads/2006/12/Common-Sturgeon.jpg" alt="" width="391" height="200" /><strong>Acipenser sturio</strong> &#8211; It is difficult to imagine that some European rivers can hide giant fish measuring up to 20 feet (6 m) long that are capable of producing many millions of eggs in a single spawning. Such a fish is the common sturgeon. In spite of its prolific breeding habits, the species is at risk. The common sturgeon usually grows to a length of 3.3 to 6.6 feet (1 to 2 m), but can be longer. At least one report indicates that the species can attain a length of 20 feet (6 m) and a weight of about 1,300 pounds (600 kg). Despite this report, probably the largest specimen actually on record was 11.3 feet (3.4 m) long and 705 pounds (320 kg). The female has the potential to deliver close to 2.5 million eggs in a single spawning episode. As with some 40 or so other sturgeon species, the common sturgeon is under severe threat. It was once found in large numbers along the coast of Europe, from the North Sea to the Mediterranean and Black Seas. Today it is scarce throughout its range. Sturgeons are famous primarily for their eggs, known universally as caviar. However, many species have also been fished for their flesh. All species are long-lived, with ages beyond 50 years being common.</p>
<p><strong> Double Life</strong></p>
<p>The common sturgeon is anadromous, which means that it spends its life at sea but migrates into freshwater habitats during the spawning season. One notable exception to the rule is the common sturgeon population that lives in Lake Ladoga in Russia. Another is the sterlet, which lives permanently in fresh water. Spawning migrations upriver occur in early or mid-spring, with actual breeding taking place during early summer. Spawning is usually in pools that are several feet deep and have a flow of water. Alternatively, it may occur along river banks covered by spring floods. The eggs-up to 2.5 million for a largish female-are scattered over a gravelly bottom and abandoned. By now the condition of the adults has deteriorated, since they do not feed during their migrations: Many, in fact, will not make it back to sea to resume feeding. In better days such losses would not have been a problem, owing to the large number of adults in the population, not to mention the high numbers of offspring. Today every adult that dies adds to the scarcity of the species as it struggles to survive in the modern world. Young common sturgeon stay fairly close to the spawning grounds at first, but gradually move downriver as they grow. Some reports suggest that by the fall of the same year they move out to sea; others state that this may be delayed for one to four years. Whatever the case, males mature at between seven and nine years (some estimates indicate later maturation between nine and 13 years), while females may take eight to 14 years (some estimate it to be between 11 and 18 years) to mature and return to their waters of birth to breed for the first time.</p>
<p><strong> Overfishing and Habitat Destruction</strong></p>
<p>Overfishing is usually cited as the main reason for the sharp decline in numbers. Undoubtedly, fishing has had a severe effect on natural populations, not just of the common sturgeon, but of many of its relatives. Some of the eastern populations and species in particular are still the focus of illegal trade in caviar. In some cases arguments have been put forward to ban fishing altogether. However, others argue that to do so would drive the market underground and into the hands of organized illegal groups, thus probably accentuating rather than solving the problem. The common sturgeon&#8217;s best hope for the future appears to lie in coordinated captive-breeding programs to rear stocks for commercial exploitation of the roe (caviar). Such farms are likely to produce more fish than may eventually be needed for harvesting purposes, thus acting as a potential source of fish for restocking former habitats. A beneficial spinoff from such programs is that they also reduce pressure on existing wild stocks. However successful such breeding projects may be, the survival of the species in the wild needs to be urgently addressed. One problem is the pollution of watercourses. While it presents a daunting challenge, there are other potentially more difficult pressures facing the common sturgeon, including the building of dams, water channeling, and allied habitat-altering developments that plague the waterways.</p>
<p><strong> Statistic Common sturgeon (Baltic sturgeon)<br />
Acipenser sturio</strong></p>
<ul>
<li>Family: Acipenseridae</li>
<li>World population: Unknown, but close to extinction in parts of its range</li>
<li>Distribution: Atlantic Ocean from Norway south to North Africa and into the western Mediterranean; Baltic, and Black Seas</li>
<li>Habitat: Relatively shallow, mainly coastal seas, usually over sandy or muddy bottoms; some specimens move to deeper waters</li>
<li>Size: Length: on average 3.3-6.6 ft (1-2 m). Weight: a 10-ft (3-m) specimen may weigh about 440 lb (200 kg)</li>
<li>Form: Elongated body with distinct snout and characteristic caudal (tail) fin in which upper lobe is larger than lower one. Five rows of large, stout scales down body. Underslung mouth has distinctive barbels (whiskers)</li>
<li>Diet: Adults feed on bottom-dwelling marine invertebrates, but will also take small fish; juveniles feed mostly on bottom-dwelling freshwater invertebrates</li>
<li>Breeding: Migrates up to 620 miles (1,000 km) upriver in early to mid-spring; spawning occurs over gravel or pebbles, usually in flowing water pools. Each female is usually accompanied by more than 1 male. Hatching takes about 7 days, and juveniles may stay in their river of birth for up to 4 years</li>
<li>Related endangered species: Over 40 populations of the 25 species are under varying degrees of threat, including the ship sturgeon (Acipenser nudiventris)</li>
</ul>
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		<title>Danube Salmon</title>
		<link>http://www.animalaqua.com/danube-salmon/</link>
		<comments>http://www.animalaqua.com/danube-salmon/#comments</comments>
		<pubDate>Tue, 12 Dec 2006 07:30:44 +0000</pubDate>
		<dc:creator>AnimalAqua</dc:creator>
				<category><![CDATA[Fish]]></category>
		<category><![CDATA[danube river]]></category>
		<category><![CDATA[habitat]]></category>
		<category><![CDATA[majestic fish]]></category>
		<category><![CDATA[maturity]]></category>
		<category><![CDATA[sea dwelling]]></category>
		<category><![CDATA[water]]></category>

		<guid isPermaLink="false">http://animal.alltheline.com/?p=55</guid>
		<description><![CDATA[Hucho hucho ( image ) Unlike its oceangoing cousins, the Danube salmon lives, breeds, and dies in the inland waters of the Danube River, where it is exposed to habitat destruction and environmental pollution. Salmon are majestic fish, and the Danube species is the largest of all. While the Danube salmon lives in rivers, many [...]


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			<content:encoded><![CDATA[<p class="MsoNormal"><strong>Hucho hucho</strong><br />
( <a target="_blank" href="http://www.animalaqua.com/wp-content/uploads/2006/12/danobe.jpg">image</a> )<strong><br />
</strong><br />
Unlike its oceangoing cousins, the Danube salmon lives, breeds, and dies in the inland waters of the Danube  River, where it is exposed to habitat destruction and environmental pollution. Salmon are majestic fish, and the Danube species is the largest of all. While the Danube salmon lives in rivers, many species live at sea. On reaching maturity, sea-dwelling salmon undertake a migration of epic proportions to the river in which they were spawned. Compelled by instinct, each fish battles against unbelievable odds-sometimes including rapids or even falls-to reach the mouth of its home river to spawn. The female digs pits in<span class="postbody"> <span id="more-55"></span></span> the gravel in which to lay her eggs, which take about five weeks to hatch. Although the life cycle of sea-dwelling salmon is physically challenging, its migratory habits have helped safeguard its success as a species. Juveniles that manage to negotiate the journey from their spawning grounds to the sea stand a better chance of reaching maturity than those that stay in the rivers of their birth. Unlike the Danube salmon, sea salmon avoid exposure to the pollution or irreversible habitat alteration that can occur in rivers as a result of environmental disasters.</p>
<p><strong> International Pressures</strong></p>
<p>The Danube River flows through 12 countries inhabited by a total of more than 70 million people. Enforcement of environmental controls is therefore complicated. Some problems are historical, relating to industrial sites that were built before environmental legislation had to be taken into account. Others are political, where one country is not bound by the environmental laws of another. Both situations apply to the Danube, along which there are approximately 1,700 industries, many producing wastes that are known to be toxic. Aquatic organisms cannot survive the levels of toxicity and must find new areas or perish. Escape is not always possible, and the result is often the destruction of many thousands of creatures and their habitats.</p>
<p><strong> Pollution Crises</strong></p>
<p>In 2000 a dam leaked cyanide from a Romanian gold mine into the Tiza River, a tributary of the Danube, killing all forms of aquatic life for 250 miles (400 km) downstream. In Hungary alone about 85 tons of dead fish were removed. Some environmentalists claimed that the whole ecological system of the river had been wiped out by the spillage. By early February 2000 cyanide was detected at the confluence of the Tiza with the Danube, and it was feared that the poisoning might cause the extinction of the Danube salmon. The outcome has been less devastating, but the situation illustrates the precarious future faced by the Danube salmon. Such pollution crises are serious enough to threaten the existence of any Danube species. In the case of the Danube salmon there are other significant threats, including overfishing, water extraction for a wide range of industrial and other uses, and river alteration (primarily channeling and damming). The Danube salmon is being pressurized from many quarters, to the extent that its long-term survival looks uncertain. Repeated attempts to introduce hatchery-bred stocks into a number of watercourses have been largely unsuccessful. However, in 1968 stocks were introduced from Czechoslovakia into Spanish waters, well outside the species&#8217; natural range. Over the years the stocks have become established. Restocking might not be the answer to the Danube salmon&#8217;s problems, but it could be an essential lifeline.The Danube salmon (also known as the European sabnma, Danube trout, and European river trout) is the largest of all the salmons, and faces an uncertain future.</p>
<p><strong> Danube salmon (European salmon, Danube trout, European river trout)</strong></p>
<ul>
<li>Family: Salmonidae</li>
<li>World population: Unknown; estimates are low</li>
<li>Distribution: Rivers of Danube basin; introduced elsewhere in Europe, U.S., Canada, and Morocco</li>
<li>Habitat: Deep, well-oxygenated regions of fast-flowing water; also found in backwaters at temperatures of 43-64Â°F (6-18Â°C)</li>
<li>Size: Up to 6.5 ft (2 m). Weight: over 220 lb (100 kg)</li>
<li>Form: Similar to salmon (Salmo salar), but slimmer, large head and jaws. Greenish back, silvery sides with diffused pink sheen, white along belly. Numerous small star-shaped black spots on back, gradually decreasing in number down body</li>
<li>Diet: Adults feed on other fish, amphibians, reptiles, waterfowl, and even small mammals. Juveniles feed predominantly on invertebrates</li>
<li>Breeding: Spawning March-May after migration to shallow, gravelly areas with fast-flowing, oxygen-rich water. Female excavates nest with tail and (with help of male) covers fertilized eggs. Hatching period 5 weeks</li>
<li>Related endangered species: Satsukimasa salmon (Oncorhynchus ishikawai); carpione del Garda (Salmo carpio); Ohrid trout (S. letnica); ala Balk (S. plarycephalus); Adriatic salmon (Salmothymus obtusirostris); beloribitsa (Stenodus leucichthys leucichthys)</li>
</ul>
<p>[tags]danube salmon, Satsukimasa salmon, Adriatic salmon, fish, sea, life, pollution[/tags]</p>


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		<title>Northern Bluefin Tuna</title>
		<link>http://www.animalaqua.com/northern-bluefin-tuna/</link>
		<comments>http://www.animalaqua.com/northern-bluefin-tuna/#comments</comments>
		<pubDate>Tue, 12 Dec 2006 07:22:39 +0000</pubDate>
		<dc:creator>AnimalAqua</dc:creator>
				<category><![CDATA[Fish]]></category>
		<category><![CDATA[bluefin tuna]]></category>
		<category><![CDATA[body]]></category>
		<category><![CDATA[internal body temperature]]></category>
		<category><![CDATA[rich blood supply]]></category>
		<category><![CDATA[Tuna]]></category>
		<category><![CDATA[water]]></category>

		<guid isPermaLink="false">http://animal.alltheline.com/?p=54</guid>
		<description><![CDATA[Thunnus thynnus ( image ) Tuna are the long-distance specialists of the fish world, covering several thousand miles a year on their migrations. They are also among the fastest-swimming fish in the world. Some populations are now endangered as a result of the world demand for tuna meat. Tuna are fish built for speed. Every [...]


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			<content:encoded><![CDATA[<p><strong>Thunnus thynnus</strong><br />
( <a target="_blank" href="http://www.animalaqua.com/wp-content/uploads/2006/12/tuna.jpg">image</a> )</p>
<p>Tuna are the long-distance specialists of the fish world, covering several thousand miles a year on their migrations. They are also among the fastest-swimming fish in the world. Some populations are now endangered as a result of the world demand for tuna meat. Tuna are fish built for speed. Every aspect of their body form is suited to maximum performance in the water. Their body is fusiform (pointed at both ends) with a stiff, sickle-shaped caudal (tail) fin perfect for producing maximum thrust. The bluefin tuna also<span class="postbody"> <span id="more-54"></span></span> has several features designed to reduce water resistance. Its scales are tiny and lie tightly against the skin, so minimizing friction. Its large eyes are well-bedded within their sockets, so the outer layer lies flush with the skin surface. The two dorsal (back) fins and the single anal (belly) fin fit into grooves when they are folded, while the series of finlets between the fins and the tail allow water to flow between them. The pectoral (chest) and pelvic (hip) fins are small and have a stiff front edge, which prevents them from collapsing when they are extended at high speeds. A striking feature of the tuna&#8217;s body is the deep-red color of the muscle tissue. This characteristic is found in the family Scombridaea that includes other high-speed species such as mackerel, bonitos, and their relatives. Red muscle has a rich blood supply that is typical of a species constantly on the move. The blood supplies the high levels of oxygen that the fish need and gives them plenty of stamina. However, tuna would be unable to maintain their constant day-and-night swimming at speed were it not for a further adaptation. Unlike the majority of fish whose internal body temperature matches that of their environment, a tuna&#8217;s countercurrent blood circulation allows it to maintain a high internal body temperature whatever the water temperature.</p>
<p><strong> All-Consuming Demand<br />
</strong><br />
Bluefin tuna have been fished for about 100 years. Originally only sport fishermen and a few small-scale enterprises supplying fish for human consumption fished the species. But starting in the 1930s-and continuing for the next 30 to 40 years-sport fishing soared in popularity. Then in the 1970s a new commercial dimension was added to the sports angling industry, arising out of the fast-expanding demand for fresh (deep-frozen) tuna meat in Japan. The market for raw tuna provided by sushi and sashimi enthusiasts led to 40 percent of the global tuna catch being sent to the Japanese market. A major factor leading to the rapid expansion was the improvement in air freight and transport that began in the 1970s and made possible transglobal overnight deliveries of fresh-caught tuna. Allied to major changes that had occurred within the commercial fishery-which had also led to ever greater catches-the fishing of large tuna by sport anglers for profit as well as sport led to dramatically declining yields in the space of a few years. Total Atlantic harvests of bluefin tuna plummeted from a peak of 38,600 tons (35,000 tonnes) in 1964 to less than half-18,500 tons (16,800 tonnes)-by 1972. By the early 1980s catches in the western Atlantic had dropped even further to about 6,600 tons (6,000 tonnes). A report by the International Commission for the Conservation of Atlantic Tunas (ICCAT) has estimated that by the early 1990s the population of adult bluefins in the western Atlantic had dropped to just 13 percent of its 1975 level.</p>
<p><strong> Population Conundrum<br />
</strong><br />
It is clear that fishing controls need to be introduced to protect the northern bluefin tuna. However, differences of opinion, disputed scientific data, a lack of faith in ICCAT&#8217;s ability to enforce quotas, demands for higher-than-stated quotas for the western Atlantic mean that there is no consensus on population levels. The picture is made even more complex by the migration of some stocks across the oceans. Meanwhile, tagging programs, aerial surveys, captive breeding, and genetic analysis are some of the methods being used to establish the status of the bluefin tuna on both sides of the Atlantic. This should pave the way for enforcing realistic fishing controls.<br />
<strong><br />
Northern bluefin tuna; (Atlantic bluefin tuna)<br />
Thunnus thynnus</strong></p>
<ul>
<li>Size: Length: 15 ft (4.6 m). Weight: up to 1,3201b (600 kg)</li>
<li>Habitat: Open oceanic waters tunaForm: Fusiform (spindle-shaped), streamlined body. Coloration deep blue above, with purple or green iridescence (colors that shimmer as observer changes position); silvery sides and belly</li>
<li>Family: Scombridaei</li>
<li>World population: Disputed: about 40,000 in the western Atlantic (no equivalent data available for the eastern Atlantic)</li>
<li>Distribution: Atlantic. On eastern side from Norway to Mediterranean Sea, along western African coast to Cape Blanc. On western side from Newfoundland south to Brazil. Seen in central and northwestern Pacific</li>
<li>Diet: Fish (including herring, mackerel, and whiting); also squid</li>
<li>Breeding: Spawning occurs in the Gulf of Mexico, the western Atlantic, and in the Mediterranean Sea in the east. Western stocks spawn from mid-April to mid-June; their eastern counterparts breed from June-August. Female can release about 30 million eggs</li>
<li>Related endangered species: Albacore tuna (Thunnus alalunga); bigeye tuna (T obesus); southern bluefin tuna (T maccoyii); Monterrey Spanish mackerel (Scomberomorus concolor)</li>
</ul>
<p class="MsoNormal">[tags]tuna,  Bluefin tuna, water, sea, Albacore tuna, Monterrey Spanish mackerel[/tags]</p>


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