Cartilaginous fish

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Chondrichthyes or cartilaginous fishes are jawed fish with paired fins, paired nares, scales, two-chambered hearts, and skeletons made of cartilage rather than bone. Cartilaginou is the greek word for the class that includes such fishes as stingrays, sharks, and chimaeras. In the word by word translation, 'chondr-' refers to cartilage that totally replaces bone in such fishes.

by neeraj



31-Aug-10, 3:35 pm

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