HomeFish encyclopediaRay-finned fishesPerch-like fishSlimys, slipmouths or ponyfishesWhipfin ponyfish Whipfin ponyfish (Equulites leuciscus) Scientific name: Equulites leuciscus G?nther, 1860 The Whipfin ponyfish (Equulites leuciscus) is a marine fish of the family Leiognathidae. In the aquarium it needs water at 26–29°C (79–84°F). Native range: Indo-West Pacific, East Africa to northern Australia and New Caledonia. Whipfin ponyfish care at a glanceTemperature26–29°C (79–84°F) BiologyDorsal spines (total): 8; Dorsal soft rays (total): 16; Anal spines: 3; Anal soft rays: 14. Body silvery; males usually with triangular bluish patch on side of belly; eyes greenish. Head naked; with nuchal spine. Protracted mouth pointing downward. 2nd dorsal and anal spines elongated.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEquulites leuciscusFamilyLeiognathidae (Slimys, slipmouths or ponyfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length25.0Common length10.0Depth range10–70 m (33–230 ft)EnvironmentMarine; demersal; depth range 10 - 70 mClimateTropicalDistributionIndo-West Pacific: East Africa to northern Australia and New Caledonia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceHigh, minimum population doubling time less than 15 months (K=0.93-1.80) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026