The main food of mosquito-eating fish is the spineless insects such as mosquitoes, especially mosquito larvae. Because mosquito-eating fish has no stomach and a relatively short and stubby digestive tract, it can be said to gobble up when preying on mosquito larvae. When the water temperature is suitable, each mosquito-eating fish can swallow 40-100 mosquito larvae a day and night, and can swallow more than 200 mosquitoes at most. The use of mosquito-eating fish to kill mosquitoes will not pollute the environment, but also eliminate mosquito larvae in the water body, which can effectively control the breeding of mosquitoes.

Adult mosquito fish became infected by swallowing mosquitoes The natural enemy of mosquitoes, so it has a certain effect on eliminating mosquitoes and other mosquito larvae. Mosquito-eating fish is highly adaptable, and can not only live in various water bodies such as ditches, ponds, swamps, and paddy fields, but also be stocked in small water bodies such as small pools, rockery pools, family lotus jars, and vase arrangements. Mosquitoes can live in an environment with a water temperature of 5 to 40 °C. They usually like to swim in groups on the surface of the water and move quickly.