castaneum, Aphyosemion Myers [G. S.] 1924:2, Figs. 1-2 [American Museum Novitates No. 116; ref. 3091] Kisangani, Orientale Province, Democratic Republic of Congo. Holotype: AMNH 8337. Paratypes: AMNH 8338 (5), 14765 (1); MRAC 15616 [ex AMNH] (1). •Synonym of Aphyosemion christyi (Boulenger 1915) -- (Woeltjes 1983:10 [ref. 30503], Wildekamp et al. 1986:207 [ref. 6198], Wildekamp 1993:122 [ref. 26378], Lazara 2001:16 [ref. 25711]). •Valid as Aphyosemion castaneum Myers 1924 -- (van der Zee & Huber 2006:139 [ref. 28903], van der Zee & Sonnenberg 2011:73 [ref. 31317], van der Zee et al. 2018:86 [ref. 35718], van der Zee & Sonnenberg 2018:7 [ref. 36381]). Current status: Valid as Aphyosemion castaneum Myers 1924. Nothobranchiidae. Distribution: Central Congo River basin, northeastern Democratic Republic of Congo. Habitat: freshwater.