Trematocara zebra (Perciformes; Cichlidae), a new species from the north west coast of Lake Tanganyika (Zaire)

Trematocara zebra, anew cichlid fish from the north west coast of Lake Tanganyika is described from the sublittoral and benthic zone of the rocky shores at Luhanga and Pemba situated between 12 and 26 km South of Uvira (Zaire). The species is characterized by its particular colour pattern (brownish body with purple reflections and irregular dark brown vertical stripes and blotches on the sides in males, a similar pattern in females but with a large distinct horizontal dark bar at the level of the pectoral fin), by the relatively low number of gill rakers on the lower part of the first branchial arch (12 to 13), by the presence of 7 large infraorbital and 1 preorbital sensory pores, by the low number of soft anal fin rays (7-8), by the elongated second and third anal finray and by the particularly high dorsal fin. A short comparaison with the other known species of the genus and some biological data on the new species are given.