Erstbeschreibung: Trewavas, Ethelwynn. 1935. „A Synopsis of the Cichlid Fishes of Lake Nyasa“. Annals and Magazine of Natural History. Series 10; pp. 65-118
Typusart: Trematocranus microstoma TREWAVAS, 1935
Beschriebene Arten:
Trematocranus labifer TREWAVAS, 1935
Trematocranus microstoma TREWAVAS, 1935
Trematocranus pachychilus DIERICKX, HANSSENS, RUSUWA & SNOEKS, 2018
Trematocranus placodon REGAN, 1922