1) Fish 2) Gambusia affinis 3) Live-bearer 4) Poeciliid 5) Poeciliid fish 6) Topminnow 1) Gambusia 
The western mosquitofish (Gambusia affinis) is a species of freshwater fish, also known commonly, if ambiguously, as simply mosquitofish or by its generic name, Gambusia, or by the common name gambezi. There is also an eastern mosquitofish (G. holbrooki). Mosquitofish are small in comparison to other fish, with females reaching an overall length o...
[n] - silvery topminnow with rows of black spots of tropical North America and West Indies
Gambusia affinis noun silvery topminnow with rows of black spots of tropical North America and West Indies; important in mosquito control
any of several fishes that feed on mosquito larvae, as Gambusia affinis, found in the southeastern U.S., now introduced into other parts of the world for mosquito control.