HomeFish encyclopediaRay-finned fishesFlatfishesLarge-tooth floundersSpiny flounder Spiny flounder (Pseudorhombus spinosus) Scientific name: Pseudorhombus spinosus McCulloch, 1914 The Spiny flounder (Pseudorhombus spinosus) is a marine fish of the family Paralichthyidae. Native range: Western Pacific, Western Australia to southern Queensland. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 72-76; Anal spines: 0; Anal soft rays: 55 - 57. Pectoral fin on ocular side with 10-12 soft rays.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePseudorhombus spinosusFamilyParalichthyidae (Large-tooth flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length30.0EnvironmentMarine; demersalClimateTropicalDistributionWestern Pacific: Western Australia to southern Queensland.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: 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