All About Fish

Clownfish.
Photo Source: Leanne Guenther |
What distinguishes fish from the other animal classes?
Fish are a class of aquatic vertebrates. The combination of gills, fins and the fact that they live only in the water make fish different from all other animals.
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Some fish are beautiful...
Photo Source: Corel Web Gallery
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Fish spend all of their lives in the water and
are cold-blooded with the exception of Tuna family and the Mackerel shark family. |

And some...not so much.
Photo Source: Corel Web Gallery |

Yes!
A seahorse is a fish.
Photo Source: Corel Web Gallery |
Scientists believe that there are more than 24,000
different species of fish in the world. |

Lion Fish or Scorpion fish
Photo Source: Corel Web Gallery |
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They range in size from the largest, Whale
shark at 16 m (51 ft) long, to the smallest the 8 mm (1/4 in.) Stout
Infantfish.
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The Whale Shark is the largest
member of the fish family.
Photo Source: Corel Web Gallery |

Shark skeletons are made
of cartilage, not bone.
Photo Source: Corel Web Gallery
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Most fish have a skeleton made of bone but some, like
sharks, have a skeleton made of cartilage. |
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