Fishes Class Actinopterygii Woodward, 1891 - ray-finned fishes Order Cyprinodontiformes Berg, 1940 - killifishes Family Poeciliidae Garman, 1895 - live-bearers 1 Subfamily Poeciliinae Garman, 1895 - livebearers 2 Subfamily Fluviphylacinae Roberts, 1970 3 Subfamily Aplocheilichthyinae Myers, 1928