Uruguay
Checklist of Endemic Freshwater Fish Species
This list of freshwater fish species found exclusively in Uruguay is based on the taxonomy used in Eschmeyer's Catalog of Fishes (2023). For further details on possible inaccuracies in the list see Sources & Caveats.
Fricke, R., Eschmeyer, W. N. & Van der Laan, R. (eds) 2023 Catalog of Fishes: Genera, Species, References. Version downloaded 9 February 2023 https://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatmain.asp
The current version can be accessed here
Oligosarcus platensis
(Characiformes Characidae)
Gymnogeophagus
peliochelynion (Cichliformes Cichlidae)
Gymnogeophagus tiraparae
(Cichliformes Cichlidae)
Cnesterodon holopteros
(Cyprinodontiformes Poeciliidae)
Austrolebias affinis
(Cyprinodontiformes Rivulidae)
Austrolebias cinereus
(Cyprinodontiformes Rivulidae) Ashy
Pearlfish
Austrolebias gymnoventris
(Cyprinodontiformes Rivulidae)
Austrolebias queguay
(Cyprinodontiformes Rivulidae)
Austrolebias reicherti
(Cyprinodontiformes Rivulidae)
Austrolebias viarius
(Cyprinodontiformes Rivulidae) Rocha
Pearlfish