HomeFish encyclopediaRay-finned fishesCarpsSuckersSoutheastern blue sucker Southeastern blue sucker (Cycleptus meridionalis) Scientific name: Cycleptus meridionalis Burr & Mayden, 1999 The Southeastern blue sucker (Cycleptus meridionalis) is a freshwater fish of the family Catostomidae. Native range: North America, Pearl, Pascagoula, and Alabama river systems. Species factsScientific nameCycleptus meridionalisFamilyCatostomidae (Suckers)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length59.3EnvironmentFreshwater; benthopelagicClimateSubtropicalDistributionNorth America: Pearl, Pascagoula, and Alabama river systems.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceLow, minimum population doubling time 4.5 - 14 years (K=0.10-0.14; tmax=33) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026