Polyipnus

Polyipnus
Temporal range: Early Oligocene to Present
Threelight Hatchetfish (Polyipnus triphanos)
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Actinopterygii
Subclass: Neopterygii
Order: Stomiiformes
Family: Sternoptychidae
Subfamily: Sternoptychinae
Genus: Polyipnus
Günther, 1887
Diversity
32 species

Polyipnus is an oceanic ray-finned fish genus which belongs in the family Sternoptychidae. This is the largest genus of the marine hatchetfishes (Sternoptychinae) and indeed of the entire Sternoptychidae. It is not quite as apomorphic as their relatives; it may be that the genus is actually a paraphyletic assemblage of less advanced Sternoptychinae and would need to be split.

Species

There are currently 32 recognized species in this genus:[1]

  • Polyipnus aquavitus R. C. Baird, 1971 (Aquavit Hatchetfish)
  • Polyipnus asper Harold, 1994
  • Polyipnus asteroides L. P. Schultz, 1938
  • Polyipnus bruuni Harold, 1994
  • Polyipnus clarus Harold, 1994 (Slope Hatchetfish)
  • Polyipnus danae Harold, 1990
  • Polyipnus elongatus Borodulina, 1979
  • Polyipnus fraseri Fowler, 1934
  • Polyipnus indicus L. P. Schultz, 1961
  • Polyipnus inermis Borodulina, 1981
  • Polyipnus kiwiensis R. C. Baird, 1971 (Kiwi Hatchetfish)
  • Polyipnus laternatus Garman, 1899
  • Polyipnus latirastrus Last & Harold, 1994 (Combside Hatchetfish)
  • Polyipnus limatulus Harold & Wessel, 1998
  • Polyipnus matsubarai L. P. Schultz, 1961
  • Polyipnus meteori Kotthaus, 1967
  • Polyipnus nuttingi C. H. Gilbert, 1905 (Nutting's Hatchetfish)
  • Polyipnus oluolus R. C. Baird, 1971
  • Polyipnus omphus R. C. Baird, 1971
  • Polyipnus ovatus Harold, 1994
  • Polyipnus parini Borodulina, 1979
  • Polyipnus paxtoni Harold, 1989 (Paxton's Hatchetfish)
  • Polyipnus polli L. P. Schultz, 1961
  • Polyipnus ruggeri R. C. Baird, 1971 (Rugby Hatchetfish)
  • Polyipnus soelae Harold, 1994 (Soela Hatchetfish)
  • Polyipnus spinifer Borodulina, 1979
  • Polyipnus spinosus Günther, 1887 (Spiny Hatchetfish)
  • Polyipnus stereope D. S. Jordan & Starks, 1904
  • Polyipnus surugaensis Aizawa, 1990
  • Polyipnus tridentifer McCulloch, 1914 (Three-spined Hatchetfish)
  • Polyipnus triphanos L. P. Schultz, 1938 (Threelight Hatchetfish)
  • Polyipnus unispinus L. P. Schultz, 1938

Fossils of this genus show that they have existed at least since the Early Oligocene, about 30 million years ago.[2]

References

Wikimedia Commons has media related to Polyipnus.
  1. ↑ Froese, Rainer, and Daniel Pauly, eds. (2012). Species of Polyipnus in FishBase. February 2012 version.
  2. ↑ Sepkoski, Jack (2002): [Polyipnus]. In: A compendium of fossil marine animal genera. Bulletin of American Paleontology 364: 560. HTML database excerpt