HomeFish encyclopediaRay-finned fishesFlatfishesLarge-tooth floundersFantail flounder Fantail flounder (Xystreurys liolepis) Scientific name: Xystreurys liolepis Jordan & Gilbert, 1880 The Fantail flounder (Xystreurys liolepis) is a marine fish of the family Paralichthyidae. Native range: Eastern Pacific, Monterey Bay in California, USA to Gulf of California. BiologyInhabits muddy and sandy bottoms, from 4.6-79 m depth. Usually buried in bottoms. Feeds almost exclusively on crustaceans. Marketed fresh.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameXystreurys liolepisFamilyParalichthyidae (Large-tooth flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length63.5Common length25.0Depth range5–79 m (16–259 ft)EnvironmentMarine; demersal; depth range 5 - 79 mClimateSubtropicalDistributionEastern Pacific: Monterey Bay in California, USA to Gulf of California.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: minor commercialResilienceMedium, 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