Barathronus

Barathronus
Barathronus bicolor
Barathronus parfaiti
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Ophidiiformes
Family:	Aphyonidae
Genus:	Barathronus Goode & T. H. Bean, 1886

Barathronus is a genus of deep-sea fish that are placed in the family Aphyonidae (blind cusk eels) or family Bythitidae (brotulas), depending on the source.

Barathronus are viviparous deep-sea fish. However, a juvenile Barathronus pacificus has been recorded in shallow waters. Based on the stable oxygen isotope composition of otoliths, at least one species, Barathronus maculatus, has a pelagic larval stage, followed by an ontogenetic vertical migration to deeper waters.

There are currently 10 recognized species in this genus, although the exact species differ between the FishBase and the Catalog of Fishes:

...
Wikipedia