Polyipnus
Polyipnus is a genus of oceanic ray-finned fish in the family Sternoptychidae. This is the largest genus of the marine hatchetfishes subfamily 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.
Fossils of this genus show that they have existed at least since the Early Oligocene, about 30 million years ago.Species
There are currently 33 recognized species in this genus:
- Polyipnus aquavitus R. C. Baird, 1971
- Polyipnus asper Harold, 1994
- Polyipnus asteroides L. P. Schultz, 1938
- Polyipnus bruuni Harold, 1994
- Polyipnus clarus Harold, 1994
- 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
- Polyipnus laternatus Garman, 1899
- Polyipnus latirastrus Last & Harold, 1994
- Polyipnus limatulus Harold & Wessel, 1998
- Polyipnus matsubarai L. P. Schultz, 1961
- Polyipnus meteori Kotthaus, 1967
- Polyipnus notatus Harold, I. M. Kemp & Shore, 2016
- Polyipnus nuttingi C. H. Gilbert, 1905
- Polyipnus oluolus R. C. Baird, 1971
- Polyipnus omphus R. C. Baird, 1971
- Polyipnus ovatus Harold, 1994
- Polyipnus parini Borodulina, 1979
- Polyipnus paxtoni Harold, 1989
- Polyipnus polli L. P. Schultz, 1961
- Polyipnus ruggeri R. C. Baird, 1971
- Polyipnus soelae Harold, 1994
- Polyipnus spinifer Borodulina, 1979
- Polyipnus spinosus Günther, 1887
- Polyipnus stereope D. S. Jordan & Starks, 1904
- Polyipnus surugaensis Aizawa, 1990
- Polyipnus tridentifer McCulloch, 1914
- Polyipnus triphanos L. P. Schultz, 1938
- Polyipnus unispinus L. P. Schultz, 1938
