Ichthyology

Ichthyology is the branch of zoology devoted to the study of fish. This includes the bony fish (Osteichthyes), the cartilaginous fish (Chondrichthyes) such as sharks and rays, and the jawless fish (Agnatha). Since there are as many species of fish as all other vertebrates put together, and they have been evolving for a very long time, there is a bewildering variety; while most species have probably been found and described, there is much that is still not known about biology and behavior.

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The practice of ichthyology is closely connected with marine biology, limnology, and oceanography.

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Zoology: Zoology (Greek zoon = animal and logos = word) is the biological discipline which involves the study of animals....

Fish: : This page is about the animals. For other meanings, please see Fish (disambiguation)....

Osteichthyes: Class Osteichthyes are the bony fish, a group paraphyletic to the land vertebrates, which are sometimes included. Most belong to the Actinopterygii. The others are called lobe-finned fish, and include lungfish and coelacanths. They are traditionally treated as a class of vertebrates, with subclas...