HomeFish encyclopediaRay-finned fishesFlatfishesLarge-tooth floundersPacific sanddab Pacific sanddab (Citharichthys sordidus) Scientific name: Citharichthys sordidus Girard, 1854 The Pacific sanddab (Citharichthys sordidus) is a marine fish of the family Paralichthyidae. Native range: Eastern Pacific, Bering Sea coast of Alaska to Cabo San Lucas, southern Baja California, Mexico. Occurrence in Nicaragua needs validation. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 86-102; Anal spines: 0; Anal soft rays: 67 - 81; Vertebrae: 38 - 40. Caudal rounded; pectorals rather large and pointed. Eyed side dull brown or tan irregularly mottled with dark; Dorsal, anal, caudal and anal fins black; blind side white to pale brown. Freshly caught males with dull orange spots and blotches. Young light olive green on eyed side, finely and sparsely speckled with brown, black, and orange, especially on fins.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCitharichthys sordidusFamilyParalichthyidae (Large-tooth flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length41.0Depth range0–549 m (0–1801 ft)EnvironmentMarine; demersal; depth range 0 - 549 m, usually 15 - ? mClimateTemperateDistributionEastern Pacific: Bering Sea coast of Alaska to Cabo San Lucas, southern Baja California, Mexico. Occurrence in Nicaragua needs validation.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercial; gamefish: yesResilienceMedium, minimum population doubling time 1.4 - 4.4 years (K=0.30; tmax=11; tm=2.5) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026