Aulopiformes

Aulopiformes is a diverse order of marine ray-finned fish consisting of some 15 extant and several prehistoric families with about 45 genera and over 230 species. The common names grinners, lizardfishes and allies, or aulopiforms are sometimes used for this group. They are included in the superorder Cyclosquamata, though modern taxonomists consider this superorder to be unwarranted.

The hammerjaw, Omosudis lowii, is a small deep-sea aulopiform fish, found worldwide in tropical and temperate waters to 4,000 m (13,000 ft) depth. It is the only representative of its family, Omosudidae (from the Greek omo, "shoulder", and Latin sudis, either "esox, fish of the Rhine" or "stake").

species of fish

Pseudotrichonotus is a genus of fish in the family Pseudotrichonotidae native to the Indian and Pacific Ocean. This genus is the only member of its family.

species of fish

Bathysauropsis is the only genus in the lizard greeneye family, Bathysauropsidae, a group of deep-sea fishes.

species of fish

Cimolichthys (Greek for "chalk fish") is an extinct genus of large predatory marine aulopiform ray-finned fish known worldwide from the Late Cretaceous. It is the only member of the family Cimolichthyidae.

thumb|244px|Bathysaurus use their lower jaw to scoop in the sand

thumb|left|Fossil

Prionolepis is a genus of prehistoric ray-finned fish belonging to the order Alepisauriformes.