Eels live in wetland ecosystems.

Eels belong to wetland ecosystem. The eel is a typical migratory fish, and usually inhabits soil holes and crevices in rivers, lakes, reservoirs, and still-water ponds, and sometimes swims up from the water to land to breathe through its skin, or migrates to other waters through wet meadows.

Eel

Eel, alias: white eel, white eel, river eel, eel, eel, eel, eel, wind bun, Japanese eel. The body is elongated, the front is cylindrical, the back is slightly flattened. The body length is about 40 centimeters. The head is long and pointed. The muzzle is pointed and flat. The eyes are small and located in the front of the head. Interocular interval wide, about equal to the length of the muzzle. The nostrils are 2 on each side, the posterior nostrils are close to the front of the eyes, and the anterior nostrils are in the form of small tubes located on either side of the end of the muzzle.

Eels in natural waters hide in the shade during the day and come out at night to demand bait. It mainly feeds on small fishes, crabs, shrimps, crustaceans and aquatic insects, and also eats some rotten carcasses of animals and scraps of higher plants. Eels kept in ponds also like to feed and live in shaded places. Eels are phototropic to low light, and as the eel grows, this phototropism weakens or disappears.

The eel has the habit of swimming against the current, especially when it is young. In the breeding pool, once there is water injection, large groups of eels top water swimming against the current, and even in the vertical wall of the pool when there is water flowing down, the eel will have to jump on the trend. If the eel is raised in an ordinary earthen pond, when it rains at night or when the pond is filled with water, the eels in the pond will escape in large numbers. Therefore, in eel farming must do a good job of pond escape facilities.