The body length of eels is generally between 60-90 cm, and there are some larger eels, which can reach about 1.3 meters in adulthood. However, larger eels are not very common. And compared with other fish, their size is small. Because they can reach 60-90 cm in length, but their bodies are slender, compared with other fish, their attack power will be lower.

Eels have different body shapes in different growing environments. If it is an artificially farmed eel, its size will be smaller, and its body length will be about 40-50 cm. But they like to live in clean and refreshing water, and if the wild waters are poor, they will not develop too much.

Under normal circumstances, the life span of eels is about 50 years. However, now the industry is relatively developed, and the wild waters may be polluted. Eels have higher requirements for water quality. They like to be in clean and refreshing water. If the water quality is too poor, their life will also be affected. Coupled with human capture and hunting, they can't die. There are also artificially raised eels, and their life span will not be too long. Because the captive environment can't completely simulate the wild environment, their life span will also be affected.