Cottus asper és una espècie de peix pertanyent a la família dels còtids.

Descripció Fa 30 cm de llargària màxima (normalment, en fa 7). Nombre de vèrtebres: 34-39.FishBase Hugg, D.O., 1996. MAPFISH georeferenced mapping database. Freshwater and estuarine fishes of North America. Life Science Software. Dennis O. i Steven Hugg, 1278 Turkey Point Road, Edgewater (Maryland), Estats Units.

Reproducció És ovípar amb ous demersals i adhesius, i larves pelàgiques.Matarese, A.C., A.W. Kendall, D.M. Blood i M.V. Vinter, 1989. Laboratory guide to early life history stages of Northeast Pacific fishes. NOAA Tech. Rep. NMFS 80:1-652.Patten, B.J., 1971. Spawning and fecundity of seven species of northwest American Cottus. Amer. Midl. Nat. 85(2):493-506.

Alimentació Menja principalment larves d'insectes aquàtics i invertebrats bentònics.Scott, W.B. i E.J. Crossman, 1973. Freshwater fishes of Canada. Bull. Fish. Res. Board Can. 184:1-966.

Depredadors És depredat per Ptychocheilus oregonensis, Coregonus clupeaformis, Salvelinus malma, Salvelinus namaycush i Mergus merganser americanus.FishBase Munro, J.A. i W.A. Clemens, 1936. Food of the American merganser (Mergus merganser americanus) in British Columbia. Can. Field-Nat. 50(3):34-36.

Hàbitat És un peix demersal i de clima temperat (60°N-32°N).Riede, K., 2004. Global register of migratory species - from global to regional scales. Final Report of the R&D-Projekt 808 05 081. Federal Agency for Nature Conservation, Bonn, Alemanya. 329 p.

Distribució geogràfica Es troba a Nord-amèrica: conques pacífiques des de Seward (Alaska) fins al riu Ventura (Califòrnia).Brown, L.R., S.A. Matern i P.B. Moyle, 1995. Comparative ecology of prickly sculpin, Cottus asper, and coastrange sculpin, Cottus aleuticus, in the Eel River, California. Environ. Biol. Fish. 42:329-343.Carl, G.C., W.A. Clemens i C.C. Lindsey, 1959. The freshwater fishes of British Columbia (3a. revisió). B.C. Prov. Mus. Handb. 5: 192 p.Coad, B.W., 1995. Encyclopedia of Canadian fishes. Canadian Museum of Nature and Canadian Sportfishing Productions Inc. Singapur.Coker, G.A., C.B. Portt i C.K. Minns, 2001. Morphological and ecological characteristics of Canadian freshwater fishes. Can. Manuscr. Rep. Fish. Aquat. Sci. Núm. 2554. 89p.Evermann, B.W. i E.L. Goldsborough, 1907. The fishes of Alaska. Bull. U.S. Bur. Fish. 26: 219-360.Girard, C.F., 1852. Contributions to the natural history of the freshwater fishes of North America. I. A monograph of the cottoids. Smithsonian Contrib. Knowl. 3(art. 3):80 p.Lamb, A. i P. Edgell, 1986. Coastal fishes of the Pacific northwest. Harbour Publishing Co. Ltd., B.C., el Canadà. 224 p.Lord, J.K., 1866. The naturalist in Vancouver Island and British Columbia. Vol. 2. Richard Bentley, Londres. 375 p.Lord, J.K., 1866. The naturalist in Vancouver Island and British Columbia. Vol. I. Richard Bentley, Londres. 358 p.McPhail, J.D. i C.C. Lindsey, 1970. Freshwater fishes of northwestern Canada and Alaska. Fish. Res. Board Can. Bull. 173:381 p.McPhail, J.D. i R. Carveth, 1993. Field key to the freshwater fishes of British Columbia. Fish Museum, Department of Zoology, U.B.C., el Canadà, 239 p.Nelson, J.S., E.J. Crossman, H. Espinosa-Pérez, L.T. Findley, C.R. Gilbert, R.N. Lea i J.D. Williams, 2004. Common and scientific names of fishes from the United States, Canada, and Mexico. American Fisheries Society, Special Publication 29, Bethesda, Maryland, Estats Units.Quast, J.C. i E.L. Hall, 1972. List of fishes of Alaska and adjacent waters with a guide to some of their literature. U.S. Dep. Commer., NOAA Tech. Rep. NMFS SSRF-658, 47 p.Richardson, J.S., T.J. Lissimore, M.C. Healey i T.G. Northcote, 2000. Fish communities of the lower Fraser River (Canada) and a 21-year contrast. Environ. Biol. of Fish 59:125-140.Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea i W.B. Scott, 1980. A list of common and scientific names of fishes from the United States and Canada. Am. Fish. Soc. Spec. Publ. (12)1-174.Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea i W.B. Scott, 1991. Common and scientific names of fishes from the United States and Canada. Am. Fish. Soc. Spec. Pub. (20):183 p.Sinclair, D.C., 1968. Diel limnetic occurrence of young Cottus asper in two British Columbia lakes. J. Fish. Res. Board Can. 25(9):1997-2000.Wang, J.C., 1981. Taxonomy of the early life stages of fishes: Fishes of the Sacramento-San Joaquin estuary and Moss landing harbor-Elkhorn slough, California. Ecological Analysts, Inc., Concord, Califòrnia. 168 p.Wydoski, R.S. i R.R. Whitney, 1979. Inland fishes of Washington. University Washington Press. 220p.

Longevitat La seua esperança de vida és de 7 anys.Bond, C.E., 1963. Distribution and ecology of freshwater sculpins, genus Cottus, in Oregon. Univ. Michigan, Ann Arbor. 186 pp.

Ús comercial És massa petit i molt difícil de capturar en grans quantitats com per a ésser emprat com a aliment o en qualsevol altra cosa. Tot i així, els exemplars grossos són bons com a esquers i una menja excel·lent.Morrow, J.E., 1980. The freshwater fishes of Alaska. University of. B.C. Animal Resources Ecology Library. 248p.Eschmeyer, W.N., E.S. Herald i H. Hammann, 1983. A field guide to Pacific coast fishes of North America. Houghton Mifflin Company, Boston, Estats Units. 336 p.

Observacions És inofensiu per als humans.

Referències

Bibliografia Anònim, 2001. Base de dades de la col·lecció de peixos del National Museum of Natural History (Smithsonian Institution). Smithsonian Institution - Division of Fishes. Anònim, 2002. Base de dades de la col·lecció de peixos del American Museum of Natural History. American Museum of Natural History, Central Park West, NY 10024-5192, Estats Units. Heckel, J.J., 1840. Ichthyologische Beitrage zu den Familien der Cottoiden, Scorpaenoiden, gobioiden, und Cyprinoiden. Ann. Wein. Mus. Natur. 2:143-164. Jones, R., 1999. Haida names and utilization of common fish and marine mammals. p. 39-48. A: N. Haggan i A. Beattie (eds.). Back to the Future: Reconstructing the Hecate Strait Ecosystem. Fisheries Centre Research Reports 7(3). 65 p. Kinziger, A.P., R.M. Wood i D.A. Neely, 2005. Molecular systematics of the genus Cottus (Scorpaeniformes: Cottidae). Copeia (2):303-311. Krejsa, R.J., 1967. The systematics of the prickly sculpin, Cottus asper Richardson, a polytypic species. Part I. Synonymy, nomenclatural history, and distribution. Pac. Sci. 21(2): 241-251. Krejsa, R.J., 1967. The systematics of the prickly sculpin, Cottus asper Richardson, a polytypic species. Part II. Studies on the life history, with special reference to migration. Pac. Sci. 21(4):414-422. McDowall, R.M., 1988. Diadromy in fishes: migrations between freshwater and marine environments. Croom Helm, Londres. Petersen, J.H. i D.L. Ward, 1999. Development and corroboration of a bioenergetics model for Northern Pikeminnow feeding on juvenile salmonids in the Columbia River. Trans. Am. Fish. Soc. 128(5):784-801. Wu, H.L., K.-T. Shao i C.F. Lai (eds.), 1999. Latin-Chinese dictionary of fishes names. The Sueichan Press, Taiwan.

Enllaços externs

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