Sternoptyxis anoceanicray-finned fishgenuswhich belongs in thefamilySternoptychidae.This is thetype genusof the Sternoptychidae, as well as themarine hatchetfishsubfamilySternoptychinae.
| Sternoptyx Temporal range: EarlyOligoceneto Present
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|---|---|
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| Diaphanous hatchetfish (S. diaphana) | |
Scientific classification
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Stomiiformes |
| Family: | Sternoptychidae |
| Subfamily: | Sternoptychinae |
| Genus: | Sternoptyx Hermann,1781 |
Sternoptyxhave silvery, high, and laterally compressed bodies and large, non-telescopic eyes.[1]They are all relatively small, with even the largest species (S. pseudobscuraandS. pseudodiaphana) not exceeding 60 millimetres (2.4 in)standard length.[2]
Species
editThere are currently four recognized species in this genus:[2]
- Sternoptyx diaphanaHermann,1781(Diaphanous hatchetfish)
- Sternoptyx obscuraGarman,1899
- Sternoptyx pseudobscuraR. C. Baird,1971(Highlight hatchetfish)
- Sternoptyx pseudodiaphanaBorodulina,1977(False oblique hatchetfish)
Fossilsof this genus show that they have existed at least since theEarly Oligocene,about 30million years ago.[3]
References
edit- ^Baird, R. C. (1971). "The systematics, distribution, and zoogeography of the marine hatchetfishes (family Sternoptychidae)".Bulletin of the Museum of Comparative Zoology.142:1–128.
- ^abFroese, Rainer;Pauly, Daniel (eds.)."Species in genusSternoptyx".FishBase.February 2012 version.
- ^Sepkoski, Jack(2002): [Sternoptyx].In:A compendium of fossil marine animal genera.Bulletins of American Paleontology364:560.HTML database excerpt
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