Lycodes vahlii
{{Short description|Species of fish}}
{{Speciesbox
| image = Lycodes vahlii 2.jpg
| taxon = Lycodes vahlii
| authority = Reinhardt, 1831
| synonyms = {{Specieslist
| Lycodes zoarchus | Goode & Bean, 1896
| Lycodes vahlii pallida | Smitt, 1901
| Lycodes vahlii maculatus | Vladykov & Tremblay, 1936
}}
| synonyms_ref = {{FishBase|Lycodes|vahlii|month=June|year=2022}}
}}
Lycodes vahlii, Vahl's eelpout or the checker eelpout, is a species of marine ray-finned fish belonging to the family Zoarcidae, the eelpouts. It is native to coasts of Northern Atlantic Ocean.
Taxonomy
Lycodes vahlii was first formally described in 1831 by the Norwegian zoologist Johannes Christopher Hagemann Reinhardt with its type locality given as Julianehåb in Greenland.{{Cof genus|genus=Lycodes|access-date=8 November 2022}} When Reinhardt described this species he classified it within a new monospecific genus, Lycodes, although many species have subsequently been included in this genus and L. vahlii is the type species of Lycodes and thus of the subfamily Lycodinae.{{Cof family|family=Lycodinae||access-date=8 November 2022}} The specific name honours the Danish botanist and pharmacist Jens Laurentius Moestue Vahl,{{cite web|url=https://runeberg.org/dbl/18/0162.html |title = Vahl, Jens Laurentius Moestue, 1796-1854 |website= Dansk biografisk Lexikon|access-date=8 November 2022}} who gave his collection of plant and fish specimens to the University of Copenhagen, where Reinhardt held the post of Professor of Zoology.{{cite web | url = http://etyfish.org/perciformes14/ | title = Order Perciformes Suborder Cottoidea: Infraorder Zoarcales: Family: Zoarcidae | work = The ETYFish Project Fish Name Etymology Database | editor1= Christopher Scharpf | editor2 = Kenneth J. Lazara | name-list-style = amp |date = 6 May 2022 | access-date = 8 November 2022 | publisher = Christopher Scharpf and Kenneth J. Lazara}} Lycodes gracilis of the eastern Atlantic was considered to be conspecific with L. vahli but is now treated as a separate species, the common name Vahl's eelpout being applied to this species by some authorities.{{cite iucn |author=Nielsen, J. |author2=Knudsen, S. |author3=Uiblein, F. |name-list-style=& |year=2015 |title=Lycodes gracilis |page=e.T18179829A45904070 |url=https://www.iucnredlist.org/species/18179829/45904070 |access-date=8 November 2022}}
Description
Lycodes vahlii varies in color from olive green to dark brown, paler on the belly, with between 5 and 12 dark bands on the body which continue onto the dorsal fin. The front bands are frequently notably darker than the rear bands. The inside of the mouth and the peritoneum are brown. It has an elongate body which has a depth at the origin of the anal fin 7% to 11% of the total length and it has a long tail with the distance from the snout to the origin of the anal fin being36& to 44% of the total length. The head is moderately long and its length is between 15% and 24% of the total length. The rather short and rounded pectoral fins have between 18 and 20 fin rays and their length is equivalent tp between 89% and 15% of the total length. The lateral line runs close to the anal fin. There are small pores on the head and there is a dense covering of scales on the body, including the abdomen, but on the forward parts of the bases of the dorsal, anal and pectoral fins are naked. The teeth are blunt. The maximum published total length is {{cvt|57|cm}} but it is typically between {{cvt|35|and|40|cm}}.{{cite book | author1 = C. W. Mecklenburg | author2 = A. Lynghammar | author3 = E. Johannesen | author4 = I. Byrkjedal | author5 = J. S. Christiansen | author6 = A. V. Dolgov | author7 = O. V. Karamushko | author8 = T. A. Mecklenburg | author9 = P. R. Møller | author10 = D. Steinke | author11 = R. M. Wienerroither | display-authors = 3 | year = 2018 | title = Marine Fishes of the Arctic Region Volume 1 | page = 362 | publisher = Conservation of Arctic Flora and Fauna, Akureyri, Iceland | isbn = 978-9935-431-69-1 | url = https://www.caff.is/monitoring-series/451-marine-fishes-of-the-arctic-region-vol-1#:~:text=Marine%20Fishes%20of%20the%20Arctic%20Region%20is%20intended%20for%20all,as%20a%20photographic%20identification%20guide}}
Distribution and habitat
Lycodes vahlii is found in the western Atlantic and nearby Arctic Oceans off eastern Canada and western Greenland. It is an epibenthic to mesobenthic species which lives on soft substrates at depths between {{cvt|39|and|1200|m}} where the water temperature is {{cvt|1.4|to|5.8|°C}}. Specimens are rarely taken from depths of less than {{cvt|200|m}} although in the Gulf of St. Lawrence it is found at between {{cvt|100|and|300|m}}.
Biology
References
{{Reflist}}
{{Taxonbar|from=Q2298248}}
Category:Fauna of Atlantic Canada
Category:Fish of the North Atlantic
Category:Taxa named by Johan Reinhardt
Category:Fish described in 1831
{{Perciformes-stub}}