Wednesday, April 20, 2011

Fish

A fish is exothermic, aquatic, vertebrate animal that breathes with gills and has fins used for movements, stability, and it's skin is covered with scales.
Ecological role: food provision. balance the ecosystem under water
Most fish are carnivores, they spend most of their time searching for food, they don't chew their food.
They can swim 10 body lengths per second
Can detect low vibrations in the water.
There are over 25000 species of fish
Some fish make sounds by grating their teeth

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