HomeFreshwater aquarium fishRainbowfish & killifishBroadstripe topminnow Broadstripe topminnow (Fundulus euryzonus) Scientific name: Fundulus euryzonus Suttkus & Cashner, 1981 The Broadstripe topminnow (Fundulus euryzonus) is a freshwater fish of the family Fundulidae. Native range: North America, occurs only in Tangipahoa and upper Amite River systems (Lake Pontchartrain drainage) in Mississippi and Louisiana, USA. BiologyUsually occurs at the surface near shoreline vegetation in quiet pools and backwaters of creeks and small rivers. Not a seasonal killifish. Is very difficult to maintain in aquarium.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameFundulus euryzonusFamilyFundulidae (Topminnows and killifishes)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length9.0Common length5.9EnvironmentFreshwater; benthopelagic; non-migratoryClimateTemperateDistributionNorth America: occurs only in Tangipahoa and upper Amite River systems (Lake Pontchartrain drainage) in Mississippi and Louisiana, USA.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More rainbowfish & killifishRed rainbowfishGlossolepis incisusTami River rainbowfishGlossolepis pseudoincisusLake Kutubu rainbowfishMelanotaenia lacustrisDwarf rainbowfishMelanotaenia praecoxForktail rainbowfishPseudomugil furcatusBlackfin pearlfishAustrolebias nigripinnisSee all rainbowfish & killifish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026