An annotated checklist of the fishes of Gabon Author Fermon, Yves Author Bailly, Nicolas Author Cardiec, Floriane Author Causse, Romain Author Chartrain, Emmanuel Author Chirio, Laurent Author Bruyne, Godefroy De Author Deynat, Pascal Author Hopkins, Carl D. Author Lamboj, Anton Author Mennesson, Marion I. Author Beh, Jean-Hervé Mve Author Paugy, Didier Author Sidlauskas, Brian Author Sullivan, John P. Author Weghe, Jean-Pierre Van De Author Vigliotta, Thomas R. Author Zee, Jouke Van Der text Cybium 2022 46 2 2 3 http://dx.doi.org/10.5281/zenodo.10904647 journal article 10.26028/cybium/2022-462-3-001 2101-0315 Aphyosemion etsamense Sonnenberg & Blum, 2005 (Photo 33) Type-locality: Aphyosemion etsamense – “Western slopes of the Monts de Cristal , small river at village of Etsam I, crossing the road N5 from Medoneu to Kougouleu, 00°46’34.1”N , 10°24’03”E , northwestern Gabon / Gabon , sur les pentes Ouest des Monts de Cristal , petite rivière dans le village Etsam I, au niveau de la route N5 de Medoneu to Kougouleu ”. Holotype :: ZFMK 39832. Paratypes : IRET uncat (2); MRAC A4-42-P-1-4 (4); ZFMK 39833-42 (10), 39843 (1), 39844-46 (3) . Occurrence: endemic Maximum length: 3.24 cm SL Water type : freshwater Environment: benthopelagic Depth range: _ Migration: unknown IUCN status: DD – Data deficient (2010) Source: preserved Distribution and remarks: only known from some populations found in rivulets along the road N5 between Medouneu and Kougouleu in Monts de Cristal (North-West of Gabon ). Considered also as a very aberrant population of A. cameronense .