Nototheniidae

Longfin icedevil

Aethotaxis mitopteryx

Southern Ocean fish dwelling down to eight hundred fifty meters

• Circumpolar Antarctic
• Regional distribution
• Marine fish
• Indian Ocean
• Southern Ocean
• Polar regions
• Fusiform
• Medium

The longfin icedevil (Aethotaxis mitopteryx), also known as the threadfin pinhead, is a species of marine ray-finned fish belonging to the family Nototheniidae, the notothens or cod icefishes. It is native to the Southern Ocean where it can be found at depths down to 850 metres (2,790 ft). This species grows to a length of 42 centimetres (17 in) TL. This species is the only known member of its genus and is of no interest to commercial fisheries.