HomeFreshwater aquarium fishSouth & Central American cichlidsKeyhole cichlid Keyhole cichlid (Cleithracara maronii) Scientific name: Cleithracara maronii Steindachner, 1881 The Keyhole cichlid (Cleithracara maronii) is a freshwater fish of the family Cichlidae. In the aquarium it needs water at 22–25°C (72–77°F). Native range: South America, Trinidad (impersistent), Orinoco River basin (delta), rivers from Barima River (Guyana) to Ouanary River (French Guiana). Keyhole cichlid care at a glanceTemperature22–25°C (72–77°F) BiologyInhabits small creeks in the coastal zone, which have clear water and little current and is rich in decaying wood. Feeds on worms, crustaceans and insects. When faced with danger, this fearful species fix itself against a log adapting its color pattern to the substrate. Parents take care of the spawned eggs, numbering about 400, which are laid down on a flat stone.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCleithracara maroniiFamilyCichlidae (Cichlids)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length7.1EnvironmentFreshwater; brackish;; pH range: 6.0 - 8.0; dH range: ? - 20 benthopelagicClimateTropicalDistributionSouth America: Trinidad (impersistent), Orinoco River basin (delta), rivers from Barima River (Guyana) to Ouanary River (French Guiana).Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interest; aquarium: highly commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More south & central american cichlidsUmbrella cichlidApistogramma borelliiDemon eartheaterSatanoperca jurupariGoldeneye cichlidNannacara anomalaRed discusSymphysodon discusUaruUaru amphiacanthoidesFlag acaraLaetacara curvicepsSee all south & central american cichlids SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026