Teleostei (teleosts) >
Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Cynolebiinae
Eponymy: Charles J Simpson, California, was a friend of the author. We have been unable to find further details. Dr José Boitone was head of Zoological Services at the Zoo in Brasilia. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic; non-migratory. Tropical; 20°C - 24°C (Ref. 2060); 15°S - 16°S
South America: Upper Paraná River basin in Brazil.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 5.5 cm TL male/unsexed; (Ref. 27139)
Prefers pH=6.6, Hardness=6, temp.=24°C with rocks, plants and driftwood in the aquarium environment. An egg laying, peaceful community fish (Ref. 6398). Bottom spawner, 2 months incubation. Is difficult to maintain in aquarium (Ref. 27139).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Costa, W.J.E.M., 2003. Rivulidae (South American Annual Fishes). p. 526-548. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36579)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
Fisheries: commercial; aquarium: commercial
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