A fish is any gill-bearing aquatic vertebrate (or craniate) animal that lacks limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups. Because the term is defined negatively, and excludes the tetrapods (i.e., the amphibians, reptiles, birds and mammals) which descend from within the same ancestry, it is paraphyletic. The traditional term pisces (also ichthyes) is considered a typological, but not a phylogenetic classification.

Most fish are "cold-blooded", or ectothermic, allowing their body temperatures to vary as ambient temperatures change. Fish are abundant in most bodies of water. ...

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They are also caught by recreational fishers, kept as pets, raised by fishkeepers, and exhibited in public aquaria. Fish have had a role in culture through the ages, serving as deities, religious symbols, and as the subjects of art, books and ...

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Fish. (2011, May 7). Retrieved October 21, 2018, from
"Fish.", 7 May. 2011. Web. 21 Oct. 2018. <>
"Fish." May 7, 2011. Accessed October 21, 2018.
"Fish." May 7, 2011. Accessed October 21, 2018.
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Added: 5/7/2011 03:55:41 PM
Submitted By: trillwill4000
Category: Biology
Type: Free Paper
Words: 225
Pages: 1

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