HomeFish encyclopediaRay-finned fishesTrout-perches, Pirate perches and CavefishCavefishesSwampfish Swampfish (Chologaster cornuta) Scientific name: Chologaster cornuta Agassiz, 1853 The Swampfish (Chologaster cornuta) is a freshwater fish of the family Amblyopsidae. Native range: North America, Atlantic Coastal drainages from Virginia to Georgia, U.S.A. BiologyDorsal soft rays: 9-12; Anal soft rays: 9 - 10. Strongly bicolored; dark brown above, white to yellow below. Small eyes. No pelvic fins. 3 narrow black stripes on side; one on lower side wide at front, narrow at rear. 2 black streaks along back before dorsal fin separate to encircle dorsal fin; pink gills visible. Caudal fin clear near base, often black in center; dusky black band in dorsal fin. 0-2 rows of papillae on caudal fin. 9-11 branched caudal rays.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameChologaster cornutaFamilyAmblyopsidae (Cavefishes)OrderPercopsiformes (Trout-perches, Pirate perches and Cavefish)ClassActinopterygii (Ray-finned fishes)Maximum length6.8Common length4.0EnvironmentFreshwater; demersalClimateTemperateDistributionNorth America: Atlantic Coastal drainages from Virginia to Georgia, U.S.A.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (K=1.03; Fec=98) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026