Images on this website are available for licensing for editorial and commercial use.

Content © Vivid Biology 2012-2019


Fish Skeleton

Fish skeletons can either be made of cartilage, a flexible material (like in your ears and nose) that allows a fish to swim through moving its whole body; or bones, a lot more rigid but offer a better protection fro predators.


The caudal fin is always attached to the spine however other fine types are frequently not, and are supported only by the muscles. The bones of the skeleton allow the fish to move and support the structure of the body. They also protect the organs within the body.