Which of the following is the insectivorous fish used for mosquito control?
[A] Hilsa
[B] Labeo
[C] Gambusia
[D] Mystus

Gambusia is a large genus of fish in family Poeciliidae. Gambusia species are also known as mosquito fish, which, refers more specifically to two species, G. Affinis and G. Holbrooki. These can be introduced into ponds to eat mosquito larvae. That’s why, Insectivorous fish used for mosquito control is Gambusia.