The Arctic alligatorfishCommon names for Aspidophoroides olrikii at www.fishbase.org. (Aspidophoroides olrikii) is a fish in the family Agonidae.Aspidophoroides olrikii at www.fishbase.org. It was described by C.F. Lütken in 1877.Lütken, C. F., 1877 [ref. 17566] Korte bidrag til nordisk Ichthyographi. I. Foreløbige Meddelelser om nordiske Ulkefiske (Cottoidei). Videnskabelige Meddelelser fra den Naturhistoriske Forening i Kjøbenhavn, Aaret 1876–1877: 355–388 + 72–98. It is a marine and brackish-water dwelling fish which is known from the Arctic, the northwestern Atlantic and northwestern and northeastern Pacific Ocean, including Canada, Greenland, Siberia, the Barents Sea, the White Sea, the Kara Sea, the Chukchi Sea, the Bering Sea, the Bering Strait, and the Anadyr Gulf. It dwells at a depth range of 7–520 metres, in salinities of 30–35 ppt, and leads a benthic lifestyle, inhabiting sand and mud bottoms. It mostly lives in temperatures below 0 °C, but on rare occasions has been found in temperatures of 2–3 °C. Males can reach a maximum total length of 8.6 centimetres.
The diet of the Arctic alligatorfish consists of amphipods such as Dyopedos porrectus and Paradulichia typica, bivalves such as Macoma calcarea, ostracods, isopods, and nemertine worms.Food items reported for Aspidophoroides olrikii at www.fishbase.org.
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