The Species Black List
Aphyosemion etsamense
Monts de Cristal killifish
The Monts de Cristal killifish (Aphyosemion etsamense) is known only from a few rainforest creeks within the Ogooué River drainage of northwestern Gabon.
Status Data Deficient on the IUCN Red List Restriction tier 2, restricted, extent unclear Class Actinopterygii Realm Afrotropical Locality Ogooué River As IUCN records it Aphyosemion etsamense Sonnenberg & Blum, 2005 This species is one of 3,062 in a list of vertebrates the IUCN Red List records as Data Deficient or has never assessed, ranked by how narrowly restricted the published record says they are. The sentence above is the evidence the tier was read from, quoted from Matthew Richardson, Threatened and Recently Extinct Vertebrates of the World (2023).
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Check this species elsewhere: IUCN Red List · GBIF