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.
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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.
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Channel catfish "cats" are cavity nesters, meaning they lay their eggs in crevices, hollows, or debris, to protect them from swift currents.
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Channel catfish often coexist in the same waterways with its close relative, the blue catfish, which is somewhat less common, but tends to grow much larger .
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The Channel catfish has a facial taste system that is extremely responsive to L-alanine and L-arginine.
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Younger channel catfish are more consistently omnivorous, eating a large variety of plants and animals.
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North American channel catfish is an ostariophysan, or a bony fish occupying a freshwater habitat.
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Territoriality in channel catfish is identifiable by a change in body odor, which is recognizable by other members of the same species.
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Since Channel catfish have a dominance hierarchy system, information relative to the change of status of any fish is important in recognition of the social strata.
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The pectoral spine of the channel catfish is an enlarged fin ray with a slightly modified base that forms a complex articulation with several bones of the pectoral girdle.
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The first ray of the channel catfish pectoral fin is a bilaterally symmetrical spinous structure that is minimally important for movement; however, it can be locked as a defensive adaptation or used as a means for sound production.
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In most Channel catfish, a drumming sound can be produced for this use, and the incidences of the drumming sounds can reach up to 300 or 400 per second.
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Channel catfish are omnivores, and can be caught using a variety of natural and prepared baits, including crickets, nightcrawlers, minnows, shad, freshwater drum, crawfish, frogs, bullheads, sunfish, chicken liver, hot dogs, and suckers.
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Channel catfish is one of only a handful of ostariophysan freshwater fish species whose genomes have been sequenced.
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Results from comparative genomics and transcriptomics analyses and experiments involving channel catfish have supported a role for secretory calcium-binding phosphoproteins in scale formation in teleost fishes.
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