bitteri, Plesiolebias Costa [W. J. E. M.] 1989:195, Fig. 1 [Comunicações do Museu de Ciências da PUCRS, Série Zoologia v. 2 (no. 10); ref. 14436] 64 kilometers north of Mariscal Estigarribia, 21°03'S, 60°30'W, Nueva Asunción, Paraguay. Holotype: MNRJ 11554. Paratypes: MCP 12794 (2), MNRJ 11555 (2). •Valid as Plesiolebias bitteri Costa 1989 -- (Costa 1998:318 [ref. 23324]). •Valid as Cynolebias ("Plesiolebias") bitteri Costa 1989 -- (Huber 1995:12 [ref. 22880]). •Valid as Papiliolebias bitteri (Costa 1989) -- (Costa 1998:81 [ref. 23792], Lazara 2001:249 [ref. 25711], Costa in Reis et al. 2003:532 [ref. 27061], López et al. 2003:70 [ref. 27366], Menni 2004:86 [ref. 28131], Azpelicueta et al. 2009:313 [ref. 30672], Nielsen & Brousseau 2014:58 [ref. 33146], Valdesalici & Brousseau 2014:118 [ref. 33449], Sarmiento et al. 2014:187 [ref. 35004], Mirande & Koerber 2015:52 [ref. 35117], Calviño et al. 2016:10 [ref. 34699], Valdesalici et al. 2016:162 [ref. 34860], Koerber et al. 2017:7 [ref. 35083], Koerber et al. 2017:72 [ref. 35267], Koerber et al. 2017:8 [ref. 35632], Loureiro et al. 2018:11 [ref. 36240], Koerber et al. 2019:9 [ref. 36736], Drawert 2023:25 [ref. 40730]). Current status: Valid as Papiliolebias bitteri (Costa 1989). Rivulidae: Rivulinae. Distribution: South America: Paraguay River basin (Argentina, Bolivia and Paraguay). Habitat: freshwater.