Alepocephalidae

Slickheads, also known as nakedheads or smoothheads, are deep water fishes that belong to the family Alepocephalidae. They are most commonly found in the bathypelagic layer, which is approximately 3000m below the surface. They get their name from the lack of scales on their heads. Similarly, the scientific name is from the Greek ᾰ̓- (a-, "not"); λέπος (lepos, "scale"); and κεφαλή (kephalē, "head"). It has about 22 genera with ca. 96 species.

Alepocephalus is a genus of slickheads found in all oceans.

Leptochilichthys is a genus of fishes containing four species. Leptochilichthys is the only genus in the former family Leptochilichthyidae but is now included within the broader family Alepocephalidae.

Bajacalifornia is a genus of slickheads. It was described in 1925 by Charles Haskins Townsend and John Treadwell Nichols on the basis of Bajacalifornia burragei which was discovered in 1911 during the deep sea expedition of the research vessel USS Albatross off the coast of Todos Santos Bay at the Baja California peninsula. In 1952 Ichthyologist Albert Eide Parr published a revision of this genus.

Narcetes is a genus of slickheads. It was formally described by Alfred William Alcock in 1890. It currently contains six described species.

genus of slickheads

Leptoderma is a genus of slickheads found in the deep waters of the oceans.

Xenodermichthys is a small genus of slickheads.

Bathylaco is a genus of slickheads found in deep oceanic waters. It is one of nineteen genera in the family Alepocephalidae.

Rouleina is a genus of slickheads. The genus is named for the ichthyologist Louis Roule.

Asquamiceps is a genus of slickheads that occurs in all oceans. It is one of nineteen genera in the family Alepocephalidae.

Conocara is a genus of deepwater marine ray-finned fishes belonging to the family Alepocephalidae, the smooth-heads. These fishes are found in the deeper waters of the Oceans around the world.

Einara is a small genus of slickheads found in the deep waters of the oceans. They can grow to standard length

Microphotolepis is a genus of slickheads found in the Pacific and Indian Oceans.