Question

Osmoregulation in fishes - Write short notes on given term.

Answer 1

Osmoregulation is the process of maintaining an internal balance of salt and water in a fish's body. A fish is, after all, a collection of fluids floating in a fluid environment, with only a thin skin to separate the two.

Answer 2

Explanation:

Osmoregulation is the control of an osmotic pressure of the body fluids of an organism sensed by osmoreceptors in order to maintain the water content of the organism. It also maintains the fluid equilibrium and distribution of electrolytes in order to prevent the body fluids from becoming too diluted and concentrated.

Thus, the mechanism of preserving an internal balance between salt and water in the body of a fish is osmoregulation. A fish is a collection of fluids in a fluid environment, with only a thin skin separating the two. There is always a difference between the salinity of the habitat of a fish and the body's structure, whether it is aquatic or marine. Since the skin of the fish is so thin, particularly around areas such as the gills, external water is continuously attempting to penetrate the body of the fish by osmosis and diffusion.