HomeFish encyclopediaRay-finned fishesLive bearers, Killifishes and RivulinesPupfishesLake Afdera killifish Lake Afdera killifish (Aphanius stiassnyae) Scientific name: Aphanius stiassnyae Getahun & Lazara, 2001 The Lake Afdera killifish (Aphanius stiassnyae) is a freshwater fish of the family Cyprinodontidae. Native range: Africa, Ethiopia. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 9; Anal spines: 0; Anal soft rays: 11; Vertebrae: 26. Lower jaw sharply upturned, nearly perpendicular to body axis; teeth conical rather than tricuspid as in all Lebias species except L. asquamatus; cephalic neuromast system open, not in closed canals as in the L. dispar and L. fasciatus groups; interarcual cartilage absent versus present in all congeners except L. asquamatus; pectoral fins obliquely set rather than horizontal as in all congeners; large size, approaching 9.1 cm TL versus maximum body size of 7.0 cm TL for congeners.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAphanius stiassnyaeFamilyCyprinodontidae (Pupfishes)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length7.7EnvironmentFreshwater; benthopelagicClimateTropicalDistributionAfrica: Ethiopia.Conservation status (IUCN)Endangered (EN) (B1ab(iii))Threat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026