CATDOLL : CATDOLL: Why do fish have slime?

1. Why do fish have mucus on their bodies?

Because there is a kind of mucus gland in the skin of fish, the mucus cells in the mucus gland can secrete a large amount of mucus. The secreted mucus widely covers the surface of the fish body and constitutes the first portal for the fish body to directly contact the outside world, which has a protective effect on the fish.

Functions of mucus:

1. Mucus can greatly reduce the friction when fish swim, helping them swim faster and with less effort.

2. When a fish unfortunately falls into the enemy's mouth, the slippery mucus can help it escape the "enemy's" control.

3. The skin of fish is mostly thin and tender, and is particularly easy to be scratched. Mucus can play a role in protecting the skin.

4. Mucus also has a disinfecting and sterilizing effect. It can help fish resist the invasion of bacteria and prevent harmful substances in the water from entering the body through the skin.

5. Many large fish use the mucus they secrete as "nutrient solution" to feed young fish.

6. Some fish live in salt water, and the mucus on their bodies helps them adapt to changes in salt concentration and protect their skin.

2. Why is there so much saliva on the mandarin fish?

It feels good to support

3. What is the mucus on the surface of fish used for?

It has two uses. One is to reduce the resistance of water to it when swimming, and the other is to make it easier to escape after being caught by other fish.