guararug, Hypsolebias Abrantes [Y. G.], Berbel-Filho [W. M.], Carvalho [R. A.], Ramos [T. P. A.] & Lima [S. M. Q.] 2026:6, Figs. 1D, 2, 3 [Neotropical Ichthyology v. 24 (no. 1): e250044; ref. 42969] Temporary pool near Piranhas-Açu River, Piranhas-Açu River basin, Pendências Municipality, Rio Grande do Norte State, Brazil, 05°15'26"S, 36°38'58"W. Holotype: MNRJ 56075. Paratypes: MNRJ, UFRN. •Valid as Hypsolebias guararug Abrantes, Berbel-Filho, Carvalho, Ramos & Lima 2026. Current status: Valid as Hypsolebias guararug Abrantes, Berbel-Filho, Carvalho, Ramos & Lima 2026. Rivulidae: Cynolebiinae. Distribution: South America: floodplains of the lower Piranhas-Açu River basin, Rio Grande do Norte State, Brazil. Habitat: freshwater.