The eel is not a hermaphrodite, but a male-to-female switch.

1, the eel is not a hermaphrodite, but a male and female conversion. The eel is female when young, after reproduction once, transformed into male, this phenomenon is called sex reversal phenomenon. Eels from young eels to adult eels are all female, have the ability to spawn, spawned once, the ovary is transformed into a spermatophore, change female to male, and then never spawn, life-long male.

2, in general, from the embryonic period to the first sexual maturity are female (that is, body length of 35 cm below the individual's gonads are all ovaries), spawning ovaries gradually become spermatophore, body length of 36-48 cm, part of the sexual reversal, the male and female individuals are almost equal to those who have grown to more than 53 cm is more spermatophore, the year the young can only be grown to within 200 mm, 2 winter fish to reach sexual maturity, body length of about 3,000 mm. reach sexual maturity, body length of about 340 millimeters.

Life habits of eels

1, eels rarely active during the day, the night out of the cave for food, with nocturnal, daytime like more humus in the silt or in the embankment of the water in the stone gaps in the cave, the oral folds of the skin viable respiratory, so you can directly breathe the air. Eel's gills are not developed, and with the oral cavity and the laryngeal cavity of the inner wall of the epidermis as a respiratory auxiliary organs, can breathe air directly, out of the water, as long as to keep the skin moist, within a few days will not die, in the water is very poor in oxygen, but also to survive, winter and dry season, will be digging holes as deep as the ground 1-2 meters, a number of fish **** habitat.

2, eels for carnivorous ferocious fish, can prey on a variety of small animals, such as insects and their larvae, but also can swallow frogs, tadpoles and small fish, ingestion of more than sip way, when the sense of a small animal in the side of the mouth, that is, open-mouth sip, the most exuberant ingestion in the summer, the cold season can be a long time not to eat, but not to death.