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Channel catfish
Channel catfish (''Ictalurus punctatus'') is North America's most numerous catfish species. It is the official fish of Kansas, Missouri, Iowa, Nebraska,and Tennessee, and is informally referred to as a "channel cat". In the United States, they are the most fished catfish species with approximately 8 million anglers targeting them per year. The popularity of channel catfish for food has contributed to the rapid growth of aquaculture of this species in the United States.〔( Length, Weight, and Yield in Channel Catfish, Lake Diane, MI. ) E. Keenan, S. Warner, A. Crowe, M. Courtney. (2011). Cornell University Library.〕〔Carlander K.D. 1969. Handbook of freshwater fishery biology, volume 1., The Iowa State University Press, Ames. Iowa.〕
==Distribution and habitat==
Channel catfish are native to the Nearctic, being well distributed in lower Canada and the eastern and northern United States, as well as parts of northern Mexico. They have also been introduced into some waters of landlocked Europe and parts of Malaysia and almost as many parts of Indonesia.〔(Animal Diversity Web ), Museum of Zoology, University of Michigan (retrieved 22 Aug 2010)〕 They thrive in small and large rivers, reservoirs, natural lakes, and ponds. Channel "cats" are cavity nesters, meaning they lay their eggs in crevices, hollows, or debris, to protect them from swift currents.〔(Understanding the catfish spawn ), gameandfishmag.com〕 In Canada, the species is largely, though not exclusively, limited to the Great Lakes watershed from Lake Nipigon southward.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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