Complex sentence: In South Africa, "M. capensis" is one of the most important commercial food fishes and locally is generally known (from the Afrikaans "stokvis") as stockfish, not to be confused with the dried cod usually known by that name.
Split into simpler sentences: In South Africa, "M. capensis" is one of the most important commercial food fishes. It is known locally (from the Afrikaans "stokvis") as stockfish, not to be confused with the dried cod usually known by that name.