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