Q:

How many bones do fish have?

A:

Quick Answer

Fish come in a variety of species, sizes and anatomical structures, which means there is no average or typical amount of bones for fish. While some fish have a bony skeletal structure, others have a skeleton consisting of cartilage instead of bone.

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How many bones do fish have?
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Full Answer

"Cartilage-fish" are classified as chondrichthyes and include rays and sharks. These fish are descended from bony fish, but have evolved a cartilage-centric skeleton.

The lamprey and hagfish have no bony skeleton or jaw and feed through sucker-like mouths. The hagfish is highly flexible and is virtually able to tie its body in a knot; it does this to remove the slime its body produces to ward off predators.

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