FAMILY Sternoptychidae Dumeril, 1805 - marine hatchetfishes SUBFAMILY Sternoptychinae Dumeril, 1805 - marine hatchetfishes GENUS Argyropelecus Cocco, 1829 - silver hatchetfishes Species Argyropelecus aculeatus Valenciennes, in Cuvier & Valenciennes, 1850 - lovely hatchetfish Distribution: Circumglobal in tropical, subtropical and temperate seas (including Hawaiian Islands). Habitat: marine. Species Argyropelecus affinis Garman, 1899 - Pacific hatchetfish Distribution: Circumglobal in tropical and subtropical seas, including Hawaiian Islands. Habitat: marine. Species Argyropelecus hemigymnus Cocco, 1829 - half-naked hatchetfish Distribution: Circumglobal in tropical, subtropical and temperate seas, north to the Arctic region (including Mediterranean Sea and Hawaiian Islands). Habitat: marine. Species Argyropelecus gigas Norman, 1930 - giant hatchetfish Distribution: Circumglobal, except northeastern Pacific. Habitat: marine. Species Argyropelecus lychnus Garman, 1899 - tropical hatchetfish Distribution: Eastern Pacific between 30°N and 35°S. Habitat: marine. Species Argyropelecus olfersii (Cuvier, 1829) - Olfers' hatchetfish Distribution: Eastern North Atlantic north of 30°N, South Pacific south of 22°S. Habitat: marine. Species Argyropelecus sladeni Regan, 1908 - Sladen's hatchetfish Distribution: Circumglobal in tropical and temperate seas (including New Caledonia, New Zealand, Hawaiian Islands). Habitat: marine. GENUS Polyipnus Gunther, 1887 - marine hatchetfishes Species Polyipnus aquavitus Baird, 1971 - Aquavit hatchetfish Distribution: Southwestern Pacific: New Caledonia, northern New Zealand. Habitat: marine. Species Polyipnus asper Harold, 1994 - Andaman hatchetfish Distribution: Eastern Indian Ocean: Andaman Sea. Habitat: marine. Species Polyipnus asteroides Schultz, 1938 - Schultz's hatchetfish Distribution: Greenland; western Atlantic: Caribbean Sea and off Greater Antilles. Habitat: marine. Species Polyipnus bruuni Harold, 1994 - Kenyan hatchetfish Distribution: Western Indian Ocean off Kenya. Habitat: marine. Species Polyipnus clarus Harold, 1994 - slope hatchetfish Distribution: Western Atlantic, Caribbean Sea to Scotian Shelf. Habitat: marine. Species Polyipnus danae Harold, 1990 - South China Sea hatchetfish Distribution: South China Sea and the Philippines. Habitat: marine. Species Polyipnus elongatus Borodulina, 1979 - Coral Sea hatchetfish Distribution: Australia. Habitat: marine. Species Polyipnus fraseri Fowler, 1934 - Fraser's hatchetfish Distribution: Philippine Sea near Kyushu-Palau Ridge. Habitat: marine. Species Polyipnus indicus Schultz, 1961 - Schultz's Indian hatchetfish Distribution: Western Indian Ocean: Gulf of Aden to Natal (South Africa), east to Réunion (western Mascarenes). Habitat: marine. Species Polyipnus inermis Borodulina, 1981 - inermis hatchetfish Distribution: Southeastern Pacific: near Sala y Gomez Submarine Ridge. Habitat: marine. Species Polyipnus kiwiensis Baird, 1971 - Kiwi hatchetfish Distribution: Southwestern Pacific: Australia and New Zealand. Habitat: marine. Species Polyipnus laruei Vourey et al., 2017 - Tombo hatchetfish Distribution: New Caledonia. Habitat: marine Species Polyipnus laternatus Garman, 1899 - Barbados hatchetfish Distribution: Western Atlantic from Cape Hatteras to Barbados, Gulf of Mexico and Caribbean Sea. Habitat: marine. Species Polyipnus latirastrus Last & Harold, 1994 - combside hatchetfish Distribution: Queensland, Australia. Habitat: marine. Species Polyipnus limatulus Harold & Wessel, in Harold et al., 1998 - Western Indian hatchetfish Distribution: Western Indian Ocean. Habitat: marine. Species Polyipnus matsubarai Schultz, 1961 - Matsubara's hatchetfish Distribution: Western and central Pacific: southern Japan, Philippine Sea, Hawaiian-Emperor seamounts (Hawaiian Ridge). Habitat: marine. Species Polyipnus meteori Kotthaus, 1967 - meteor hatchetfish Distribution: Indo-West Pacific. Habitat: marine. Species Polyipnus notatus Harold et al., 2016 - Taiwanese hatchetfish Distribution: Off Taiwan, Celebes Sea and Philippines. Habitat: marine. Species Polyipnus nuttingi Gilbert, 1905 - Nutting's hatchetfish Distribution: Hawaiian Islands; record from Zanzibar (western Indian Ocean) needs verification. Habitat: marine. Species Polyipnus oluolus Baird, 1971 - Marshall Islands hatchetfish Distribution: Pacific at Marshall Islands. Habitat: marine. Species Polyipnus omphus Baird, 1971 - Baird's hatchetfish Distribution: Indo-West Pacific. Habitat: marine. Species Polyipnus ovatus Harold, 1994 - Philippine hatchetfish Distribution: Western Pacific: South China Sea (Philippines). Habitat: marine. Species Polyipnus parini Borodulina, 1979 - Kuroshio hatchetfish Distribution: Zone of the Kuroshio current, off Japan. Habitat: marine. Species Polyipnus paxtoni Harold, 1989 - Paxton's hatchetfish Distribution: Queensland, Australia. Habitat: marine. Species Polyipnus polli Schultz, 1961 - Poll's Atlantic hatchetfish Distribution: Greenland; North Atlantric; eastern Atlantic from Morocco to Namibia (31°N to 25°S). Habitat: marine. Species Polyipnus ruggeri Baird, 1971 - rugby hatchetfish Distribution: Southwestern Pacific: Australia and New Zealand. Habitat: marine. Species Polyipnus soelae Harold, 1994 - Soela hatchetfish Distribution: Northwest coast of Australia and West Pacific. Habitat: marine. Species Polyipnus spinifer Borodulina, 1979 - Western Pacific hatchetfish Distribution: Western Pacific from Japanese Archipelago to South China Sea and Sulu Sea. Habitat: marine. Species Polyipnus spinosus Gunther, 1887 - spiny hatchetfish Distribution: Indo-West Pacific. Habitat: marine. Species Polyipnus stereope Jordan & Starks, 1904 - Jordan's Japanese hatchetfish Distribution: Japanese Archipelago. Habitat: marine. Species Polyipnus surugaensis Aizawa, 1990 - Aizawa's Suruga hatchetfish Distribution: Suruga Bay, Japan. Habitat: marine. Species Polyipnus tridentifer McCulloch, 1914 - threespined hatchetfish Distribution: Southern Australia: Victoria to Western Australia. Habitat: marine. Species Polyipnus triphanos Schultz, 1938 - threelight hatchetfish Distribution: Western Pacific: eastern Australia, South China Sea, Indonesia. Habitat: marine. Species Polyipnus unispinus Schultz, 1938 - onespined hatchetfish Distribution: Indonesia, Coral and Tasman seas. Habitat: marine. GENUS Sternoptyx Hermann, 1781 - marine hatchetfishes Species Sternoptyx diaphana Hermann, 1781 - diaphanous hatchetfish Distribution: Circumglobal, in tropical and subtropuical waters (including New Zealand, Hawaiian Islands). Habitat: marine. Species Sternoptyx obscura Garman, 1899 - obscure hatchetfish Distribution: Tropical Indo Pacific (including Hawaiian Islands); South Atlantic. Habitat: marine. Species Sternoptyx pseudobscura Baird, 1971 - highlight hatchetfish Distribution: Circumglobal in tropical and subtropical waters (including Hawaiian Islands), but not in eastern Pacific. Habitat: marine. Species Sternoptyx pseudodiaphana Borodulina, 1977 - false oblique hatchetfish Distribution: Circumglobal in Southern Hemisphere. Habitat: marine SUBFAMILY Maurolicinae Gill, 1885 - pearlsides, constellationfishes GENUS Araiophos Grey, 1961 - maurolicins Species Araiophos eastropas Ahlstrom & Moser, 1969 - Ahlstrom's araiophos Distribution: Tropical eastern Pacific. Habitat: marine. Species Araiophos gracilis Grey, 1961 - gracile araiophos Distribution: Hawaiian Islands. Habitat: marine. GENUS Argyripnus Gilbert & Cramer, 1897 - bristlemouths Species Argyripnus atlanticus Maul, 1952 - Western Atlantic argyripnus Distribution: Western Atlantic: Florida, Puerto Rico, Caribbean Sea, western South Atlantic; eastern Atlantic: Madeira, Great Meteor Bank, Canary Islands, Endeavour Bank; ?Central PacificOcean: Hawaiian Islands. Habitat: marine. Species Argyripnus boreopacificus Prokofiev, 2017 - Pedestal Bank argyripnus Distribution: Pacific Ocean, Pedestal Bank. Habitat: marine Species Argyripnus brocki Struhsaker, 1973 - Brock's bristlemouth Distribution: Hawaiian Islands. Habitat: marine. Species Argyripnus electronus Parin, 1992 - Sala y Gomez bristlemouth Distribution: Eastern South Pacific, Sala y Gomez Ridge. Habitat: marine. Species Argyripnus ephippiatus Gilbert & Cramer, 1897 - Gilbert & Cramer's bristlemouth Distribution: Western and Hawaiian Islands, Queensland (Australia), probably more widespread. Habitat: marine. Species Argyripnus hulleyi Quero et al., 2009 - Reunion bristlemouth Distribution: Southwestern Indian Ocean: Réunion (western Mascarenes endemic). Habitat: marine. Species Argyripnus iridescens McCulloch, 1926 - brilliant pearlside Distribution: Southwestern Pacific. Habitat: marine. Species Argyripnus pharos Harold & Lancaster, 2003 - pharos bristlemouth Distribution: Western Pacific, from Philippines southward through Indonesia and Coral Sea, and western Indian Ocean off Africa. Habitat: marine. GENUS Danaphos Bruun, 1931 - bottlelights Species Danaphos asteroscopus Bruun, 1931 - Indian bottlelight Distribution: Indian Ocean. Habitat: marine. Species Danaphos oculatus (Garman, 1899) - bottlelight Distribution: Indo-Pacific, including Hawaiian Islands (in eastern Pacific from 55°N to 33°S; Indian Ocean questionable). Habitat: marine. GENUS Maurolicus Cocco, 1838 - pearlsides Species Maurolicus amethystinopunctatus Cocco, 1838 - Cocco's pearlside Distribution: Atlantic and Mediterranean Sea; reported from the western Atlantic and off Chile. Habitat: marine. Species Maurolicus australis Hector, 1875 - pennant pearlside Distribution: Southwestern Pacific and southeastern