Mosquitofish

Gambustia affinis, Poeciliidae

Mosquitofish grow to 2 1/2 inches long. They are tan to olive-colored above, pale yellowish below. Their scales have dusky spots near the edges, and they have a dark bar below their eyes. The dorsal and caudal fins of these fish are spotted. The mouth is small, with the lower jaw sticking out beyond the upper jaw, and the teeth are also small. Mosquitofish swim near the surface and take their name from their food source: mosquito larvae.