The giant sea catfish (Arius gigas), also called the ewe or the marine catfish,Common names of Arius gigas at fishbase.org. is a species of sea catfish in the family Ariidae. It was described by George Albert Boulenger in 1911, originally under the genus Tachysurus.Boulenger, G. A., 1911 (24 Feb.) [ref. 579] Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History). London. v. 2: i-xii + 1-529 It is known from brackish and freshwater in the Burkina Faso, Ivory Coast, Cameroon, Benin, Mali, Ghana and Nigeria. It reaches a maximum total length of , and a maximum weight of . Males incubate eggs in their mouths.
The giant sea catfish is of commercial significance as a food fish; however, its populations have declined due to over-fishing, and possibly chemical pollution.
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