The lack of a dark humeral mark distinguishes Attonitus ephimeros from Attonitus irisae which has a distinct, vertically-elongate humeral bar. The presence on the body wall above the anal-fin base of a band of dark pigmentation which is distinctly wider over the second and third branched anal-fin rays and has a rounded anterior margin in Attonitus ephimeros separates that species from Attonitus bounites which lacks such pigmentation.Description: Dorsal-fin with 2 unbranched and 8 branched rays. Anal-fin with 3 unbranched and 14-17, typically 15-16, branched rays (Ref 53400).
- Vari, R.P. and H. Ortega 2000 Attonitus, a new genus of sexually dimorphic characiforms (Ostariophysi: Characidae) from western Amazonia; a phylogenetic definition and description of three new species. Ichthyol. Explor. Freshwat. 11(2):113-140. (Ref. 53400)
No one has provided updates yet.