HomeFish encyclopediaRay-finned fishesPerch-like fishSlimys, slipmouths or ponyfishesBigscale ponyfish Bigscale ponyfish (Secutor megalolepis) Scientific name: Secutor megalolepis Mochizuki & Hayashi, 1989 The Bigscale ponyfish (Secutor megalolepis) is a brackish-water fish of the family Leiognathidae. Native range: Western Pacific, Thailand, Malaysia, Indonesia and northern Australia. BiologyOccurs over soft bottom of the continental shelf.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSecutor megalolepisFamilyLeiognathidae (Slimys, slipmouths or ponyfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length4.8EnvironmentMarine; brackish; demersalClimateTropicalDistributionWestern Pacific: Thailand, Malaysia, Indonesia and northern Australia.Conservation status (IUCN)Not EvaluatedThreat 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