Sternoptyx diaphana,thediaphanous hatchetfish,is aspeciesof deep searay-finned fishin thefamilySternoptychidae.It is thetype speciesof the genusSternoptyx,and was first described by the French naturalistJohann HermanninDer Naturforscher1781.[3]
| Sternoptyx diaphana | |
|---|---|
| |
| Diaphanous hatchetfish | |
Scientific classification
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Stomiiformes |
| Family: | Sternoptychidae |
| Genus: | Sternoptyx |
| Species: | S. diaphana
|
| Binomial name | |
| Sternoptyx diaphana | |
Description
editSternoptyx diaphanais a short, deep-bodied fish with a laterally compressed body and a maximum length of about 45 mm (1.8 in). The mouth is nearly vertical, the snout is short and the eyes are large. The body slopes steeply up from the head and levels off at the caudal peduncle. In front of the dorsal fin is a toothed, pear-shaped translucent plate supported by a single spine. The dorsal fin has 9 to 12 soft rays and the anal fin 13 to 14. There is a translucent fold of skin just below the short tail, and another below the ventral region of the body. There arephotophoresbehind and below the eye, on the gill cover, and rows of photophores on the underside of the fish. The dorsal region is dark, the flanks are silvery and the fins transparent.[4][5]
Distribution and habitat
editSternoptyx diaphanahas a wide distribution in temperate and tropical waters of all the world's oceans, although occurring with less frequency in equatorial seas. Its depth range is 300 and 1,500 metres (1,000 and 5,000 ft), but it is most often found between about 600 and 900 metres (2,000 and 3,000 ft), where the water temperature is between 4 and 11 °C (39 and 52 °F). It appears not to make thedaily vertical migrationsmade by some related species.[6]
Ecology
editThe diet consists of small fish,euphausiids,decapods,copepodsandamphipods.Larger fish generally consume larger food items; the diet varies with location with the fish appearing to be opportunistic predators of whatever prey species they encounter.[6]
Status
editSternoptyx diaphanahas a very wide distribution, is a common species and faces no particular threats. For these reasons, theInternational Union for Conservation of Naturehas assessed its conservation status as being of "least concern".[1]
References
edit- ^abHarold, A. (2015)."Sternoptyx diaphana".IUCN Red List of Threatened Species.2015:e.T18253296A21913860.doi:10.2305/IUCN.UK.2015-4.RLTS.T18253296A21913860.en.Retrieved20 November2021.
- ^Bailly, Nicolas (2015)."Sternoptyx diaphanaHermann, 1781 ".WoRMS.World Register of Marine Species.Retrieved27 February2016.
- ^ Hermann, J. 1781. Schreiben an den Herausgeber über ein neues amerikanisches Fischgeschlecht, Sternoptyx diaphana, der durchsichtige Brust-Falten-Fisch. -Der Naturforscher16: 8-36, Tab. I [= 1]. Halle.
- ^The Fishes of the Indo-Australian Archipelago.Brill Archive. pp. 132–133. GGKEY:6JSRCF1TTR1.
- ^McEachran, John; Fechhelm, Janice D. (2013).Fishes of the Gulf of Mexico, Vol. 1: Myxiniformes to Gasterosteiformes.University of Texas Press. p. 437.ISBN978-0-292-75705-9.
- ^abHopkins, T.L.; Baird, R.C. (1973). "Diet of the hatchetfishSternoptyx diaphana".Marine Biology.21(1): 34–46.doi:10.1007/BF00351190.