A genus of small slender deep-sea fishes with a flattened head and abdomen. The unusual eyes lack a lens and are covered in a large thin bony membrane. Species live on the bottom in depths from about 1300 to about 5000 metres.
The genus contains four species, with one, Ipnops agassizii, found in Australian waters.
Nielsen, J.G. 1966. Synopsis of the Ipnopidae (Pisces, Iniomi) with descriptions of two new abyssal species. Galathea Report 8: 49-79. pdf