Animalia > Chordata > Actinopterygii > 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


Female Maturity [1]  2 years
Diet [2]  Carnivore
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

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
California Coast Ranges Biosphere Reserve 153447 California, United States  
Golden Gate National Recreation Area V 26135 California, United States
Gulf Islands National Park National Park Reserve II 8785 British Columbia, Canada
Gwaii Haanas National Park Reserve II 366714 British Columbia, Canada
McCloud River Preserve Conservation Easement 1693 California, United States
Mount Arrowsmith Biosphere Reserve 293047 British Columbia, Canada  
Olympic Biosphere Reserve II 922805 Washington, United States
Pacific Rim National Park Reserve II 137900 British Columbia, Canada
Point Reyes National Seashore II 27068 California, United States
Redwood National Park II 77867 California, United States
San Francisco Peninsular Watershed County Wildlife Refuge or Management Area 30320 California, United States  

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]


Parasitized by 
Clavinema mariae <Unverified Name>[5]
Crepidostomum isostomum <Unverified Name>[5]
Cyathocephalus truncatus[5]
Diplostomum baeri[5]
Diplostomum spathaceum[5]
Neoechinorhynchus rutili[5]
Neoechinorhynchus salmonis[5]
Paradilepis simoni <Unverified Name>[5]
Pomphorhynchus bulbocolli[5]
Schistocephalus solidus[5]
Tylodelphys scheuringi <Unverified Name>[5]

Range Map

Alaska (USA); America, North - Inland waters; Canada; Fraser; Nearctic; North America: Pacific slope drainages from Seward, Alaska to Ventura River, California, USA; also east of Continental Divide in upper Peace River in British Columbia, Canada. Exhibits coastal and inland forms that are genetically distinct (Ref. 27547).; USA (contiguous states);



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
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Abstract provided by DBpedia licensed under a Creative Commons License
Weather provided by NOAA METAR Data Access