Leuroglossus is a genus of deep-sea smelts found in the Pacific Ocean.

The deep-sea smelts are a family, Bathylagidae, of marine smelts.

Bathylagichthys is a species of deep-sea smelts.

Deep-sea smelts in the family Bathylagidae

Family Bathylagidae - deep-sea smelts (sometimes included in Microstomatidae)

Glossanodon semifasciatus (Deep-sea smelt)

Glossanodon struhsakeri (Struhsaker's deep-sea smelt)

The Goiter blacksmelt (Bathylagus euryops) is a species of deep-sea smelt found in the North Atlantic Ocean.

Dolicholagus longirostris, the Longsnout blacksmelt, is a species of deep-sea smelt found circumglobally in in deep waters of the tropics and sub-tropics.