CATDOLL : CATDOLL: Why do fish have slime on their bodies?

Why do fish have mucus on their bodies?

Most fish are covered with hard scales, but there are a few fish, such as eels, catfish, loaches, etc., whose bodies are covered with slimy liquid. This is because the scales on their bodies have degenerated, and there are many special mucus glands in the skin directly exposed to the outside, which can secrete a large amount of mucus to form a mucus layer. Fish scales have a protective effect on fish, and mucus has a similar function. Although it cannot block the impact of hard objects, it can prevent the invasion of toxic bacteria and block harmful substances in the water from entering the body through the skin. In fact, the role of mucus is far more than that. With its existence, the skin of fish can be impermeable, which is good for maintaining the constant osmotic pressure in the fish body. Especially for some fish that migrate in rivers, mucus on their bodies can enable them to adapt to changes in the concentration of salt in the water, and can also reduce the friction of water, helping fish swim faster and more effortlessly. From this point of view, mucus is an indispensable magic weapon for fish survival.

How to remove slime from fish

Sprinkle 0.5-1 tablespoon of coarse salt evenly on the fish body, scrub it vigorously, then sprinkle an appropriate amount of cornstarch to remove the mucus on the fish body, wipe it off, and then rinse it with water.