guarani, Argolebias Alonso [F.], Calviño [P.], Terán [G. E.], Serra [W. S.], Montes [M. M.], García [I. D.], Barneche [J. A.], Almirón [A.], Ciotek [L.], Giorgis [P.] & Casciotta [J.] in Alonso, Terán, Alanís, Calviño, Montes, García, et al. 2023:14, Figs. 4-11 [Zoological Journal of the Linnean Society v. 199 (no. 1); ref. 40292] Seasonal pond on the side of an internal road at Reserva Natural de la Defensa Puerto Península, middle Paraná River basin, Misiones Province, north-east Argentina, −25.677114, −54.578445, elevation 179 meters. Holotype: IBIGEO I473. Paratypes: CI-FML, IBIGEO, MACN. •Valid as Austrolebias guarani (Alonso, Calviño, Terán, Serra, Montes, García, Barneche, Almirón, Ciotek, Giorgis & Casciotta 2023). •Valid as Argolebias guarani Alonso, Calviño, Terán, Serra, Montes, García, Barneche, Almirón, Ciotek, Giorgis & Casciotta 2023 -- (Koerber et al. 2023:4 [ref. 40368], Alonsa et al. 2024:304 [ref. 40863]). Current status: Valid as Argolebias guarani Alonso, Calviño, Terán, Serra, Montes, García, Barneche, Almirón et al. 2023. Rivulidae: Cynolebiinae. Distribution: South America: seasonal pond at Reserva Natural de la Defensa Puerto Península, middle Paraná River basin (Misiones, Argentina). Habitat: freshwater.