duraznensis, Cynolebias García [G.], Scvortzoff [E.] & Hernández [A.] 1995:103 et seq. [Cytologia v. 60 (no. 2); ref. 25790] Durazno, Uruguay. Syntypes: whereabouts unknown. See discussion in Lazara 2001:61 [ref. 25711]. •Synonym of Austrolebias affinis (Amato 1986) -- (Costa in Reis et al. 2003:527 [ref. 27061], Koerber & Litz 2014:5 [ref. 34967], Koerber & Litz 2016:7 [ref. 35098]). •Valid as Austrolebias duraznensis (García, Scvortzoff & Hernández 1995) -- (Lazara 2001:61 [ref. 25711], Costa 2006:74 [ref. 28708], Costa 2009:188 [ref. 30417], Litz & Koerber 2014:30 [ref. 33622], Nión et al. 2016:42 [ref. 35565], Loureiro et al. 2018:11 [ref. 36240], Loureiro et al. 2023:166 [ref. 40506]). •Valid as Matilebias duraznensis (García, Scvortzoff & Hernández 1995) -- (Alonso et al. 2023:9 [ref. 40292], Koerber et al. 2023:11 [ref. 40355]). Current status: Valid as Matilebias duraznensis (García, Scvortzoff & Hernández 1995). Rivulidae: Cynolebiinae. Distribution: South America: lower Negro River basin (Uruguay). Habitat: freshwater.