Fish integument is a large organ that is continuous with the lining of all the body openings, and also covers the fins. In addition to its protective functions, fish skin may serve important roles in communication, sensory perception, locomotion, respiration, ion regulation, excretion, and thermal regulation.

What is the integument of fish?

The integument or skin is the envelope that not only separates and protects a fish from its environment, but also provides the means through which most contacts with the outer world are made. It is a large organ and is continuous with the linings of all body openings, and also covers the fins.

Do fish have integumentary systems?

Integumentary system. The entire fish including the fins is covered by the skin or integument, which constitutes the limiting surface between the fish and its surrounding environment, the water.