Lycodes vahlii

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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. 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. 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. The specific name honours the Danish botanist and pharmacist Jens Laurentius Moestue Vahl, who gave his collection of plant and fish specimens to the University of Copenhagen, where Reinhardt held the post of Professor of Zoology. 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. 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.