HomeFish encyclopediaRay-finned fishesFlatfishesLarge-tooth floundersBigmouth sanddab Bigmouth sanddab (Citharichthys gilberti) Scientific name: Citharichthys gilberti Jenkins & Evermann, 1889 The Bigmouth sanddab (Citharichthys gilberti) is a freshwater fish of the family Paralichthyidae. Native range: Eastern Pacific, Gulf of California to Peru. BiologyDorsal soft rays (total): 76-89; Anal soft rays: 57 - 68; Vertebrae: 33 - 35Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCitharichthys gilbertiFamilyParalichthyidae (Large-tooth flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length27.0Common length20.0Depth range36 m (118 ft)EnvironmentMarine; freshwater; brackish; demersal; depth range ? - 36 mClimateTropicalDistributionEastern Pacific: Gulf of California to Peru.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: minor commercialResilienceHigh, 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