coamazonicus, Hypsolebias Costa [W. J. E. M.], Amorim [P. F.] & Bragança [P. H. N.] 2014:4, Figs. 2a, 4 [Journal of Zoological Systematics and Evolutionary Research = Zeitschrift für zoologische Systematik und Evolutionsforschung v. 52 (no. 1); ref. 32952] Estado do Maranáo, Município de Araioses, seasonal pool close to the road between Pirangi and Araioses, Parnaíba River floodplains, 3°05'02"S, 41°53'56"W, Brazil, altitude about 20 meters. Holotype: UFRJ 8812. Paratypes: UFRJ 8760 (4), 8811 (3). Plus non-type material. •Valid as Hypsolebias coamazonicus Costa, Amorim & Bragança 2014 -- (Ramos et al. 2014:4 [ref. 35321], Britzke et al. 2016:134 [ref. 34461], Koerber et al. 2022:75 [ref. 39235], Abrantes et al. 2023:560 [ref. 40706]). Current status: Valid as Hypsolebias coamazonicus Costa, Amorim & Bragança 2014. Rivulidae: Cynolebiinae. Distribution: South America: Parnaíba River floodplains (northeastern Brazil). Habitat: freshwater.