Animalia > Chordata > Scorpaeniformes > Cottidae > Cottus > Cottus asper

Cottus asper (Bullhead; Prickly bullhead; Prickly sculpin)

Synonyms: Centridermichthys asper; Centridermichthys parvus; Cottopsis asper; Cottopsis parvus; Trachidermus richardsonii
Language: Danish; French; Haida; Mandarin Chinese

Wikipedia Abstract

Cottus asper is a species of fish in the sculpin family known by the common name prickly sculpin. It is native to the river drainages of the Pacific Slope of North America from Seward, Alaska south to the Ventura River of Southern California. It extends east of the Continental Divide in the Peace River of British Columbia. It has also been introduced to several reservoirs in Southern California.
View Wikipedia Record: Cottus asper


Adult Length [1]  12 inches (30 cm)
Brood Dispersal [1]  In a nest
Brood Egg Substrate [1]  Speleophils (cavity generalist)
Brood Guarder [1]  Yes
Litter Size [1]  10,980
Maximum Longevity [1]  7 years
Migration [2]  Catadromous
Diet [2]  Carnivore
Female Maturity [1]  2 years

Protected Areas

Prey / Diet

Cottus asper (Bullhead)[3]
Oncorhynchus gorbuscha (humpbacked salmon)[3]
Oncorhynchus keta (Calico salmon)[3]
Oncorhynchus nerka (sockeye salmon or kokanee)[3]


Cottus asper (Bullhead)[3]
Mergus merganser (Common Merganser)[4]
Ptychocheilus oregonensis (Seatrout)[3]


Range Map

External References

NatureServe Explorer


Attributes / relations provided by
1Frimpong, E.A., and P. L. Angermeier. 2009. FishTraits: a database of ecological and life-history traits of freshwater fishes of the United States. Fisheries 34:487-495.
2Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at
3Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
4Szoboszlai AI, Thayer JA, Wood SA, Sydeman WJ, Koehn LE (2015) Forage species in predator diets: synthesis of data from the California Current. Ecological Informatics 29(1): 45-56. Szoboszlai AI, Thayer JA, Wood SA, Sydeman WJ, Koehn LE (2015) Data from: Forage species in predator diets: synthesis of data from the California Current. Dryad Digital Repository.
5Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset accessed via on 2023-06-13; License: CC BY 4.0