? Usually, fish sleep at night, but there are also some nocturnal fish that sleep during the day and come out at night. In order to ensure that the fish can sleep safely, it is best to turn off the lights when sleeping, and avoid disturbing it by noise, so as not to cause it to be frightened. In addition, it is better to place some aquatic plants in the fish tank, so that the fish can hide.
of fish sleeping? 1. Hiding in the dark: Many fish like to hide in the dark when they sleep, such as goldfish, carp, crucian carp and so on. They often hide in rockeries or aquatic plants, which can avoid the attack of enemy organisms, so as to avoid being eaten.
2. Get into the sand: Some fish living at the bottom will get into the sand when they sleep, such as brocade fish, Huahai pig fish, etc. In this way, they can hide their position, which can also play a protective role and will not be found by natural enemies.
3. Secreting bubbles: Some fish can secrete bubbles when they sleep, such as split-mouth fish, parrotfish and so on. This kind of bubble wraps them inside, leaving only a small hole for them to breathe. With the protection of this layer of bubbles, it is also very safe to sleep.
4. Sleeping and swimming: Fish with migratory habits, such as sharks and tuna, usually swim and sleep at the same time. Their body structure makes them have to swim all the time. Once they stop, they can't survive.
