Why does the loach squeak when you hold it in your hands?

The loach can capture the outside air with its mouth, filling the entire food channel with it. When the fingers squeeze the sides of the fish, air escapes from the anus and a sound resembling a squeak is produced.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.