Yes, cod fish have scales. But, surprisingly, these scales are not the same as the scales of other fish. In fact, cod scales are more like the scales of reptiles or amphibians.
Cod scales are made of tough, protective keratin. They are arranged in overlapping rows that cover the entire body of the fish. The scales are also attached to the fish’s skin with a protein called collagen.
One of the most interesting things about cod scales is that they are constantly growing. As the fish grows, new scales are added at the base of each row. The old scales then move up the body and eventually fall off.
Cod scales have a number of functions. They provide protection from predators and parasites. They also help the fish to swim by reducing drag. And, as we mentioned before, the scales are constantly growing, which helps the fish to repair any damage that has been done to its skin.