HomeFish encyclopediaRay-finned fishesPerch-like fishMojarrasDow's mojarra Dow's mojarra (Eucinostomus dowii) Scientific name: Eucinostomus dowii Gill, 1863 The Dow's mojarra (Eucinostomus dowii) is a brackish-water fish of the family Gerreidae. Native range: Southeast Pacific, Panama to Peru, including the Galapagos Islands. BiologyBody fusiform, compressed, and not very deep (depth contained 2.5 to 3.3 times in standard length); jaws protrusible; edge of preopercle smooth; second anal spine short and strong; pelvic fins long (1.5 to 1.8 times in head length); body silvery with iridescent green tones; fins transparent except for tips or longest dorsal spines which are black.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEucinostomus dowiiFamilyGerreidae (Mojarras)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length20.0Common length12.0EnvironmentMarine; brackish; demersalClimateTropicalDistributionSoutheast Pacific: Panama to Peru, including the Galapagos Islands.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (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