Live bearers, Killifishes and Rivulines (Cyprinodontiformes)

The Live bearers, Killifishes and Rivulines (Cyprinodontiformes) order has 471 species in the Guppies.za.net fish encyclopedia, 210 of which are kept in home aquariums.

Families

Four-eyed fishes, onesided livebearers & white-eye (Anablepidae) 6 species, 6 aquarium
Killifishes (Aplocheilidae) 9 species, 9 aquarium
Pupfishes (Cyprinodontidae) 61 species, 22 aquarium
Topminnows and killifishes (Fundulidae) 42 species, 25 aquarium
Splitfins (Goodeidae) 52 species, 21 aquarium
African rivulines (Nothobranchiidae) 77 species, 53 aquarium
Poeciliids (Poeciliidae) 197 species, 57 aquarium
Middle American killifishes (Profundulidae) 4 species, 4 aquarium
Rivulines (Rivulidae) 21 species, 11 aquarium
Toothcarps (Valenciidae) 2 species, 2 aquarium