The living environment of electric eel is mostly muddy and slow-flowing waters, which brings it two characteristics: First, its eyes are basically useless and have long been degraded, and it needs to rely on weak current to detect the surrounding environment, so the electric eel's circuit is actually open for a long time.
The other is that there is no beautiful color to grow in such dirty water, so the body color of electric eel is very general, with gray-black upper body and orange lower abdomen, which is a very popular color.
Predation characteristics of electric eel
Electric eels often prey at night, including small fish, crabs, shrimps, crustaceans and aquatic insects. They also eat rotting animal carcasses, and some individuals find taller plant fragments in their food. When the electric eel preys, it swims quietly near the school of fish, and then it can continuously emit current. The electric shock fish immediately fainted and became stiff, so the electric eel took the opportunity to swallow them.
The feeding intensity and growth rate of electric eel increase with the increase of water temperature, and are generally the highest in spring and summer. Electric eels discharge sometimes not necessarily for predation, but also for physiological needs. The fish electrocuted by electric eel often exceeds the amount needed to eat, which brings harm to fishery production.
Refer to the above? Baidu encyclopedia-electric eel