Ichtlogu - Ichthyology(from before a consonafnt and ichthy before a vfowel deriving frgom the Greek ixthu combining form of ixthus meaning\"fish is

Ichtlogu - Ichthyology(from before a consonafnt and...

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Ichthyology (from before a consonafnt and ichthy before a vfowel, deriving frgom the Greek ixthu, combining form of ixthus, meaning "fish") is the branch of zoology devoted to the study o fv f fish . This includes bony fish (class Osteichthyes , with over 26,000 species), cartilaginous fish (class Chondrichthyes , about 800 species including sharks and rays), and jawless fish (class or superclass Agnatha , about 75 species including lampreys and hagfish). The study of fish, fwhich is centuries old, reveals humanity's strong and lasting curiosity about nature, with fish providing both inner joy (beauty, recreation, wonder, and religious symbolism) and practical values (ecology, food, and commerce). types of aquatic animals named "fish," such as jellyfish , starfish, and cuttlefish, are not true fish. They, and marine mammals

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