
Lake Tanganyika cichlids — species, locations & maps
Lake Tanganyika cichlids — species, locations & maps

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Lake Tanganyika cichlids — species, locations & maps.
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Compared to true N. modestus, which is characterised as a black, dark brown, or beige species with bright yellow pectoral fins and a rounded or subtruncate caudal fin with rounded corners, this form is distinguished by its bluish tones and blue submargins in the dorsal and caudal fins, hyaline greyish pectorals, and a more truncate or straight-cut caudal fin with slightly rounded corners. In addition, unlike true N. modestus and its southern variants, it has not been observed beating the caudal fin on sandy or sediment-rich substrate to expose prey.
Compared to N. sp. ‘modestus mahale’, this form differs primarily in fin coloration. In N. sp. ‘modestus mahale’, the dorsal fin has an orange margin and lilac submargin with an additional orange horizontal stripe below, while the caudal fin shows an orange margin and lilac submargin with an orange vertical stripe or diffuse field posterior to that submargin. The caudal-fin margin in that form extends across the entire fin and the fin is not divided into upper and lower parts, unlike many southern N. modestus variants. Both N. sp. ‘modestus mpimbwe’ and N. sp. ‘modestus mahale’ have not been observed uncovering prey by beating the caudal fin.
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