What is fish scale?

Fish scales are small, thin, overlapping plates that cover the skin of most fish species. They are made up of a tough, fibrous protein called keratin.

Fish scales serve a variety of functions for fish, including protection against predators, parasites, and infections. They also help fish to swim more efficiently by reducing drag in the water.

The scales of different fish species can vary in shape, size, and texture. Some fish have smooth, round scales, while others have sharp, tooth-like scales for defense. The color and pattern of fish scales also vary greatly among species, helping fish to blend in with their environment.

Fish scales can be used by scientists to study the age, growth, and health of fish populations. By analyzing the growth rings on fish scales, researchers can estimate the age of a fish and track its development over time.

Overall, fish scales are an important and fascinating feature of fish anatomy that serve multiple purposes in the aquatic environment.