CATDOLL : CATDOLL: Eels are fish, similar to snakes but without scales. What are their living habits?

Eels are warm-water fish, which means they are not resistant to high temperatures and can only survive in water temperatures between 3 and 38 degrees Celsius. The most suitable water temperature for eels is between 10 and 30 degrees Celsius, and the most suitable water temperature for eels is between 22 and 28 degrees Celsius. When the water temperature exceeds 10 degrees Celsius, eels will start to prey, but when the water temperature exceeds 29 degrees Celsius, the amount of prey they prey on will decrease. If the water temperature is below 5 degrees Celsius, the eels will enter hibernation. One thing to note is that if the water temperature exceeds 38 degrees Celsius, it is very likely that the eels will die.

Eels can breathe through their skin, so they are very resistant to low dissolved oxygen. If you want to raise eels in a pond, the dissolved oxygen level in the water must be above 5.0. If you want to raise eels indoors, the dissolved oxygen level in the water must be higher, generally above 7.0.

Eel is actually a kind of euryhaline fish, which means that this fish can grow in fresh water with a salinity of 0, but can also grow in salt water with a salt content of 1.2% to 18%. Eels generally have relatively high requirements for the ammonia nitrogen content in the water, so if eels are raised artificially, sewage treatment must be done well. Eels prefer to live in groups. If they are in a breeding environment, these fish like to crowd in groups in pipes or on feeding tables. Eel fry are usually nocturnal. They hide under the water during the day, but come out together to find food at night.

Eels have certain requirements for living conditions. They prefer clean water. If they live in waters with poor water quality, they will basically not be seen. Most eels like to lay eggs in unpolluted waters. If they live in fresh water, they usually eat some, such as small fish and shrimps, and some rotten animals.

They particularly like to live at the junction of fresh water and salt water. The river water must be very clean. They are very timid and afraid of light, and usually live at the bottom of the water.

The water temperature suitable for eels to grow is 22~28℃. When the water temperature is above 10℃, eels will start to prey, but when the water temperature exceeds 29℃, the amount of prey will decrease. If the water temperature is below 5℃, the eels will enter hibernation.

It likes to live in warm water and will hibernate if the water temperature drops below 5°.