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Journal Article

A New Species of Dwarf Cichlid Fish with Reversed Sexual Dichromatism from Lac Mai-ndombe, Zaïre

Donald J. Stewart and Tyson R. Roberts
Copeia
Vol. 1984, No. 1 (Feb. 23, 1984), pp. 82-86
DOI: 10.2307/1445037
Stable URL: http://www.jstor.org/stable/1445037
Page Count: 5

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Topics: Female animals, Fish scales, Teeth, Species, Freshwater fishes, Tumba, New species, Animal fins, Holotypes, Jaw
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A New Species of Dwarf Cichlid Fish with Reversed Sexual Dichromatism from Lac Mai-ndombe, Zaïre
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Abstract

Nanochromis transvestitus new species, known only from lac Mai-ndombe, differs from previously described Nanochromis in its sexual dichromatism: mature females acquire striking coloration (vertical white bands on a dark-gray caudal fin) unlike that in females or males of any other species, while males retain relatively drab coloration. N. transvestitus is among the smallest of cichlids: standard length of our largest specimen, a male, is 33.8 mm; sexually mature females are 25.0-32.5 mm.

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