Pisces Class Actinopterygii Woodward, 1891 - ray-finned fishes Order Cyprinodontiformes Berg, 1940 - killifishes 01 Family Aplocheilidae Bleeker, 1860 - killifishes 02 Family Nothobranchiidae 03 Family Rivulidae Hoedemann, 1962 - rivulines 04 Family Profundulidae 05 Family Fundulidae Jordan & Gilbert, 1882 - topminnows and killifishes 06 Family Valenciidae 07 Family Goodeidae Jordan, 1923 - goodeids 08 Family Poeciliidae Garman, 1895 - live-bearers 09 Family Cyprinodontidae Gill, 1865 - pupfishes 10 Family Anablepidae Garman, 1895 - four-eyed fish