Gattungsbeschreibung: 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)