Fish have 31,900 species,fish exhibit greater species diversity than any other class of vertebrates.
Fish have had a role in culture through the ages.
A fish is any aquatic vertebrate animal that is covered with scales
There are many type of fishs. There are many type of fishs . Most of fish are cold- blood , they alive in water .Food prepared from animals classified as fish is also referred to as fish, and is an important human food source.
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