the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Chordata (phylum)
Craniata (subphylum)
Vertebrata (no rank)
Gnathostomata (superclass)
Actinopterygii (class)
Neopterygii (no rank)
Teleostei (no rank)
Euteleostei (no rank)
Cyprinodontiformes (order)
Cyprinodontidae (family)
killifishes (common name)
[hide inferior taxa]
Cyprinodon variegatus (species)
Fundulus heteroclitus (species)
Oryzias latipes (species)