Mosquito-eating fish has no strict requirements on water temperature and water quality. The suitable temperature is 10-30℃, neutral water. The bottom of the mosquito fish is mud or silt sea area. It sinks during the day and floats at night. Mosquito fish is a small regional migratory fish, and the fish population is relatively concentrated during the spawning season. Mosquito fish is a warm-tempered bottom sea fish. In the wild, it likes to live in waters with a water depth of 15-70 meters.

Mosquito-eating fish, as the name suggests, is a fish that eats mosquitoes, and can prey on more than 200 fish a day and night . Because it can play the role of pest control and disease prevention, it has settled down in many countries. It was widely introduced to all parts of the world because it was mistaken for an addicted larvae and could prevent malaria; it was introduced into my country from the Philippines in 1927. In Hong Kong, authorities continue to release mosquito fish in the wild as a biological control tool for malaria control.