Twohorn Sculpin

Icelus bicornis

General Status Rank: 
Undetermined
Common Name: 
Twohorn Sculpin
Scientific Name: 
Icelus bicornis
Naming References: 
Taxonomy
Group: 
Fish
Kingdom: 
Animalia
Phylum: 
Chordata
Class: 
Actinopterygii
Order: 
Scorpaeniformes
Family: 
Cottidae
References: 
General Biology
Canada Known Subspecies Count: 
0
Reproduction Frequency Per Year: 
0
Habitat
Marine(BSC5); Env: demersal; marine ; depth range 1 - 560 m. Clim:polar; 84°N - 51°N, 180°W - 180°E. Found on muddy, sandy or rocky bottoms or among algae. Feeds on benthic polychaetes, crustaceans (Hyppolyte, Boreophausia), and large hyperiids (Phascolosoma). Lives at temperatures -1.7-10°C(W017). Benthic, shallows to 930m, eats worms and crustaceans (R131)
References: 
Distribution

Ecozones

Arctic Ocean, Beaufort Sea Amundsen Gulf, Viscount Melville Sea Region, High Arctic Sea Archipelago
References: 

Number of Occurrences

10+ occurrences in NWT: from Cape Bathurst along coast to Darnley Bay
References: 

Area of Occupancy

Score: 
-
Population

Population Size

Resilience: Low, minimum population doubling time 4.5 - 14 years (Preliminary tmax (3/K) or low-fecundity Order) (W017). Males usually below 7 cm and females below 12 cm(W017). 15.7cm (R131).
References: 
Threats

Intrinsic Vulnerability

Score: 
-
General Status Rank
Rank: 
Undetermined
Status Rank Description: 
Common (R131)
S Rank: 
SU
Decision Process Description: 
Reviewed in 2010 by DFO; no change.Draft rank by DFO in 2015, modified from not assessed to undetermined
Last Updated: 
July 22, 2015

References

Ecozones

  • Hunter, J.G., Leach, S.T. McAllister, D.E. and Steigerwald, M.B. (1984) A distributional atlas of records of the marine fishes of Arctic Canada in the Naitonal Museums of Canada and Arctic Biological Station.. National Museum of Natural Sciences Syllogeus 52 RWED Library QL 626.5 . N67D57 - BSC5 Return
  • Coad B.W. and Reist J.D. (2004) Annotated List of the Arctic Marine Fishes of Canada.. DFO, Canadian Manuscript Report of Fisheries and Aquatic Sciences 2674 - R131 Return

Habitat

  • Hunter, J.G., Leach, S.T. McAllister, D.E. and Steigerwald, M.B. (1984) A distributional atlas of records of the marine fishes of Arctic Canada in the Naitonal Museums of Canada and Arctic Biological Station.. National Museum of Natural Sciences Syllogeus 52 RWED Library QL 626.5 . N67D57 - BSC5 Return
  • Coad B.W. and Reist J.D. (2004) Annotated List of the Arctic Marine Fishes of Canada.. DFO, Canadian Manuscript Report of Fisheries and Aquatic Sciences 2674 - R131 Return
  • FishBase (2004) Fish Base, accessed Nov 5, 2004. Froese, R. and D. Pauly. Editors. 2004 www.fishbase.org, version (09/2004) - W017 Return

Naming

  • Hunter, J.G., Leach, S.T. McAllister, D.E. and Steigerwald, M.B. (1984) A distributional atlas of records of the marine fishes of Arctic Canada in the Naitonal Museums of Canada and Arctic Biological Station.. National Museum of Natural Sciences Syllogeus 52 RWED Library QL 626.5 . N67D57 - BSC5 Return

Number of Occurrences

  • Hunter, J.G., Leach, S.T. McAllister, D.E. and Steigerwald, M.B. (1984) A distributional atlas of records of the marine fishes of Arctic Canada in the Naitonal Museums of Canada and Arctic Biological Station.. National Museum of Natural Sciences Syllogeus 52 RWED Library QL 626.5 . N67D57 - BSC5 Return

Population Size

Coad B.W. and Reist J.D. (2004) Annotated List of the Arctic Marine Fishes of Canada.. DFO, Canadian Manuscript Report of Fisheries and Aquatic Sciences 2674 - R131 Return
,
FishBase (2004) Fish Base, accessed Nov 5, 2004. Froese, R. and D. Pauly. Editors. 2004 www.fishbase.org, version (09/2004) - W017 Return

Taxonomy

  • FishBase (2004) Fish Base, accessed Nov 5, 2004. Froese, R. and D. Pauly. Editors. 2004 www.fishbase.org, version (09/2004) - W017 Return