. Bonn zoological bulletin. Zoology. 4 Rainer Sonnenberg & Jouke R. Van der Zee small red dots and a symmetric colour pattern in the cau- dal fin, whilst the other has a mainly dark red dorsal fin (Van der Zee & Sonnenberg 2011) and an asymmetrical caudal fin pattern. Within the description of Haplochilns elegans, a draw- ing of a male syntype was published, that clearly shows the colour pattern of the median fins. Additionally it was mentioned in the text, that all median fins are provided with carmine red dots (Boulenger 1899). A dark dorsal fin was never mentioned, nor does the draw
. Bonn zoological bulletin. Zoology. 4 Rainer Sonnenberg & Jouke R. Van der Zee small red dots and a symmetric colour pattern in the cau- dal fin, whilst the other has a mainly dark red dorsal fin (Van der Zee & Sonnenberg 2011) and an asymmetrical caudal fin pattern. Within the description of Haplochilns elegans, a draw- ing of a male syntype was published, that clearly shows the colour pattern of the median fins. Additionally it was mentioned in the text, that all median fins are provided with carmine red dots (Boulenger 1899). A dark dorsal fin was never mentioned, nor does the drawing of a syntype show this character. This indicates that the types of A. el- egans belong to the group with a narrow red edge and small red dots on a light background on the dorsal fin. Aphyosemion elegans is widespread in the central and northern Congo Basin (Fig. 1). All known populations from the northern part of the basin have a dorsal fin with a narrow red edge and red dots on a light background. In contrast, in the central part of the basin, the Cuvette cen- trale, several populations show a complete or nearly com- plete dark red dorsal fin. Both phenotypes occur within the Cuvette centrale in sympatry, and at Bokuma (Equa- teur Province) they occur syntopic (Fig. 1; syntopic col- lection: MRAC 79229-79236 (A. elegans), MRAC 79237 (A. pseudoelegans, new species)). In addition, A. pseudoel- egans can be found sympatric and syntopic with A. sp. aff. castaneum in parts of the Cuvette centrale and with an un- described species of Aphyosemion at Ikela (see Van der Zee & Sonnenberg 2011; pers. obs. unpub.). The probably first import of live specimens with dark red dorsal fins to Europe might have been made by Lam- bert in the sixties, originating from Boende (Baensch & Riehl 1985, as A. elegans). Both, Aphyosemion elegans sensu Boulenger (1899) and specimens with a dark red dorsal fin were kept and bred by aquarium hobbyists, es- pecially the recent imports from the Bo
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