HomeFish encyclopediaRay-finned fishesPerch-like fishCichlidsBay snook Bay snook (Petenia splendida) Scientific name: Petenia splendida G?nther, 1862 The Bay snook (Petenia splendida) is a freshwater fish of the family Cichlidae. In the aquarium it needs water at 26–30°C (79–86°F). Native range: Central America, Atlantic slope of Grijalva River to Usumacinta River (Mexico), Usumacinta River (Guatemala), and Belize. Bay snook care at a glanceTemperature26–30°C (79–86°F) BiologyInhabits lakes and lower river valleys. Prefers lower and middle reaches of rivers in the slower moving waters with soft substrate of sand and mud. Feeds on fish.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePetenia splendidaFamilyCichlidae (Cichlids)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length50.0EnvironmentFreshwater;; pH range: 7.0 - 7.5; dH range: 15 - ? demersalClimateTropicalDistributionCentral America: Atlantic slope of Grijalva River to Usumacinta River (Mexico), Usumacinta River (Guatemala), and Belize.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026