Ictalurus lupus (the bagre lobo or headwater catfish) is a species of catfish in the family Ictaluridae. It resembles the closely related channel catfish (Ictalurus punctatus), but is smaller, lacks spots, and has a caudal fin with a shallower fork, and grows to a total length of 48 cm (19 in). It is found in Northeastern Mexico and the Southwestern United States.

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