HomeFish encyclopediaRay-finned fishesLive bearers, Killifishes and RivulinesTopminnows and killifishesSpeckled killifish Speckled killifish (Fundulus rathbuni) Scientific name: Fundulus rathbuni Jordan & Meek, 1889 The Speckled killifish (Fundulus rathbuni) is a freshwater fish of the family Fundulidae. Native range: North America, Dan (Roanoke), Neuse, Cape Fear, Peedee and Catawba (Santee) River drainages in Virginia and North Carolina, USA. BiologyOccurs usually over sand or mud in backwaters and pools of creeks and small to medium rivers. 9.6 cm max TL. Not a seasonal killifish.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameFundulus rathbuniFamilyFundulidae (Topminnows and killifishes)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length8.0Common length6.0EnvironmentFreshwater; benthopelagic; non-migratoryClimateTemperateDistributionNorth America: Dan (Roanoke), Neuse, Cape Fear, Peedee and Catawba (Santee) River drainages in Virginia and North Carolina, USA.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (tm SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026