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Ancient lion

Thank your creator
Nov 22, 2010
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To our beloved science and biology lovers here, what is this ?
:D

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The zebrafish, or zebra danio, is a tropical fresh-water fish not only popular in aquariums around the world, but in research tanks as well.
These two-day old larvae will turn into adult fish in three months. Scientists have found that zebrafish have the ability to regenerate fins, skins, the heart and the brain during the larval stages.
 

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