Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Craniata Linnaeus, 1758 see Subphylum Vertebrata Cuvier, 1812
     Pisces
       Class Actinopterygii Woodward, 1891 - ray-finned fishes
         Order Cyprinodontiformes Berg, 1940 - killifishes
           Family Fundulidae Jordan & Gilbert, 1882 - topminnows and killifishes