4715 Nothobranchius guentheri (Pfeffer, 1893) Nothobranchiidae African rivulines Cyprinodontiformes Teleostei Redtail notho Africa: endemic to Unguja Island, Zanzibar archipelago, eastern Tanzania (Ref. 122075). AMNH 22252 Nothobranchius guentheri AMNH 38435 Nothobranchius guentheri AMNH 8280 Nothobranchius guentheri P A0071.0336A0071.0366 6 S 39 E Nothobranchius guentheri P A0071.0033A0071.0048 6 S 39 E Nothobranchius guentheri