Alepocephalidae

Slickheads
California slickhead, Alepocephalus tenebrosus
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Osmeriformes
Family:	Alepocephalidae
Genera
See text.

Slickheads or nakedheads are a family, Alepocephalidae, of osmeriform fishes. They are deep-water fishes most common below 1,000 m. They get their name from the lack of scales on the head.

Species

There are about a hundred species in twenty genera:

• Genus Alepocephalus
  • Agassiz' slickhead, Alepocephalus agassizii Goode & Bean, 1883.
    

    Agassiz' slickhead, Alepocephalus agassizii
  • Alepocephalus andersoni Fowler, 1934.
  • Alepocephalus antipodianus (Parrott, 1948).
  • Alepocephalus asperifrons Garman, 1899.
  • Small scaled brown slickhead, Alepocephalus australis Barnard, 1923.
  • Baird's smooth-head, Alepocephalus bairdii Goode & Bean, 1879.
    

    Baird's smooth-head, Alepocephalus bairdii
  • Alepocephalus bicolor Alcock, 1891.
  • Alepocephalus blanfordii Alcock, 1892.
  • Alepocephalus dentifer Sazonov & Ivanov, 1979.
  • Alepocephalus fundulus Garman, 1899.
  • Alepocephalus longiceps Lloyd, 1909.
  • Alepocephalus longirostris Okamura & Kawanishi, 1984.
  • Alepocephalus melas de Buen, 1961.
  • Alepocephalus owstoni Tanaka, 1908.
  • Alepocephalus planifrons Sazonov, 1993.
    

    Smalleye smooth-head, Alepocephalus productus
  • Smalleye smooth-head, Alepocephalus productus Gill, 1883.
  • Risso's smooth-head, Alepocephalus rostratus Risso, 1820.
  • California slickhead, Alepocephalus tenebrosus Gilbert, 1892.
  • Alepocephalus triangularis Okamura & Kawanishi, 1984.
    

    Risso's smooth-head, Alepocephalus rostratus
  • Alepocephalus umbriceps Jordan & Thompson, 1914.
• Genus Asquamiceps
  • Asquamiceps caeruleus Markle, 1980.
  • Asquamiceps hjorti (Koefoed, 1927).
  • Asquamiceps longmani Fowler, 1934.
  • Fanfin smooth-head, Asquamiceps velaris Zugmayer, 1911.
• Genus Aulastomatomorpha
  • Aulastomatomorpha phospherops Alcock, 1890.
• Genus Bajacalifornia
  • Bajacalifornia aequatoris Miya & Markle, 1993.
  • Bajacalifornia arcylepis Markle & Krefft, 1985.
  • Sharpchin slickhead, Bajacalifornia burragei Townsend & Nichols, 1925.
  • Brown slickhead, Bajacalifornia calcarata (Weber, 1913).
  • Bajacalifornia erimoensis Amaoka & Abe, 1977.
  • Bigeye smooth-head, Bajacalifornia megalops (Lütken, 1898).
  • Bajacalifornia microstoma Sazonov, 1988.
• Genus Bathylaco
  • Bathylaco macrophthalmus Nielsen & Larsen, 1968.
  • Bathylaco nielseni Sazonov & Ivanov, 1980.
  • Black warrior, Bathylaco nigricans Goode & Bean, 1896.
• Genus Bathyprion
  • Fangtooth smooth-head, Bathyprion danae Marshall, 1966.
• Genus Bathytroctes
  • Bathytroctes breviceps Sazonov, 1999.
  • Bathytroctes elegans Sazonov & Ivanov, 1979.
  • Bathytroctes inspector Garman, 1899.
  • Bathytroctes macrognathus Sazonov, 1999.
  • Koefoed's smooth-head, Bathytroctes macrolepis (Koefoed, 1927).
    

    Koefoed's smooth-head, Bathytroctes macrolepis
  • Michael Sars smooth-head, Bathytroctes michaelsarsi Koefoed, 1927.
  • Smallscale smooth-head, Bathytroctes microlepis (Lloyd, 1909).
  • Bathytroctes oligolepis (Krefft, 1970).
  • Bathytroctes pappenheimi (Fowler, 1934).
  • Bathytroctes squamosus Alcock, 1890.
  • Bathytroctes zugmayeri Fowler, 1974.
• Genus Binghamichthys
  • Binghamichthys aphos Bussing, 1965.
• Genus Conocara
  • Conocara bertelseni Sazonov, 2002.
  • Fiolenti's smooth-head, Conocara fiolenti Sazonov & Ivanov, 1979.
  • Conocara kreffti (Nielsen & Larsen, 1970).
  • Longfin smooth-head, Conocara macropterum (Vaillant, 1888).
    

    Longfin smooth-head, Conocara macropterum
  • Elongate smooth-head, Conocara microlepis (Lloyd, 1909).
  • Murray's smooth-head, Conocara murrayi (Koefoed, 1927).
  • Conocara nigrum (Günther, 1878).
    

    Conocara nigrum
  • Salmon smooth-head, Conocara salmoneum (Gill & Townsend, 1897).
  • Werner's smooth-head, Conocara werneri Nybelin, 1947.
• Genus Einara
  • Toothless smooth-head, Einara edentula (Alcock, 1892).
  • Loosescale smooth-head, Einara macrolepis (Koefoed, 1927).
• Genus Herwigia
  • Krefft's smooth-head, Herwigia kreffti (Nielsen & Larsen, 1970).
• Genus Leptoderma
  • Leptoderma affinis Alcock, 1899.
  • Leptoderma lubricum Abe, Marumo & Kawaguchi, 1965.
  • Leptoderma macrophthalmum Byrkjedal, Poulsen & Galbraith, 2011
  • Grenadier smooth-head, Leptoderma macrops Vaillant, 1886.
  • Leptoderma retropinna Fowler, 1943.
• Genus Microphotolepis
  • Microphotolepis multipunctata Sazonov & Parin, 1977.
  • Microphotolepis schmidti (Angel & Verrier, 1931).
• Genus Mirognathus
  • Norman's smooth-head, Mirognathus normani Parr, 1951.
• Genus Narcetes
  • Narcetes erimelas Alcock, 1890.
  • Narcetes kamoharai Okamura, 1984.
  • Narcetes lloydi Fowler, 1934.
  • Blackhead salmon, Narcetes stomias (Gilbert, 1890).
  • Narcetes wonderi Herre, 1934.
• Genus Photostylus
  • Starry smooth-head, Photostylus pycnopterus Beebe, 1933.
• Genus Rinoctes
  • Abyssal smooth-head, Rinoctes nasutus (Koefoed, 1927).
• Genus Rouleina
  • Softskin smooth-head, Rouleina attrita (Vaillant, 1888).
    

    Softskin smooth-head, Rouleina attrita
  • Rouleina danae (Marshall, 1966).
  • Rouleina eucla Whitley, 1940.
  • Rouleina euryops Sazonov, 1999.
  • Rouleina guentheri (Alcock, 1892).
  • Rouleina livida (Brauer, 1906).
  • Madeiran smooth-head, Rouleina maderensis Maul, 1948.
  • Rouleina nuda (Brauer, 1906).
  • Bluntsnout slickhead, Rouleina squamilatera (Alcock, 1898).
  • Rouleina watasei (Tanaka, 1909).
• Genus Talismania (genus)
  • Antillean smooth-head, Talismania antillarum (Goode & Bean, 1896).
    

    Antillean smooth-head, Talismania antillarum
  • Threadfin slickhead, Talismania bifurcata (Parr, 1951).
  • Talismania brachycephala Sazonov, 1981.
  • Talismania bussingi Sazonov, 1989.
  • Talismania filamentosa Okamura & Kawanishi, 1984.
  • Hairfin smooth-head, Talismania homoptera (Vaillant, 1888).
  • Talismania kotlyari Sazonov & Ivanov, 1980.
  • Talismania longifilis (Brauer, 1902).
  • Threadfin smooth-head, Talismania mekistonema Sulak, 1975.
  • Talismania okinawensis Okamura & Kawanishi, 1984.
• Genus Xenodermichthys
  • Bluntsnout smooth-head, Xenodermichthys copei (Gill, 1884).
    

    Bluntsnout smooth-head, Xenodermichthys copei
  • Xenodermichthys nodulosus Günther, 1878.

References

• Froese, Rainer, and Daniel Pauly, eds. (2006). "Alepocephalidae" in FishBase. January 2006 version.
• Tony Ayling & Geoffrey Cox, Collins Guide to the Sea Fishes of New Zealand, (William Collins Publishers Ltd, Auckland, New Zealand 1982) ISBN 0-00-216987-8
• Byrkjedal, I., Poulsen, J.Y., & Galbraith, J. (2011). "Leptodermua macrophthalmum n.sp., a new species of smooth-head (Otocephala: Alepocephalidae) from the Mid Atlantic Ridge." Zootaxa 2876: 49-56.

External links

• Alepocephalidae illustration from FCIT