holmbergi, Cynolebias Berg [C.] 1897:296 [Anales del Museo Nacional de Historia Natural de Buenos Aires v. 5; ref. 14623] Buenos Aires Province, Argentina. Lectotype: MACN 5169. Paralectotypes: MACN 5169 (2) Arroyo Vivoratá, 3826 (1) Río de la Plata. Type catalog: Braga & Piacentino 1994:101 [ref. 23697]. Lectotype listed in Costa in Reis et al. 2003:531 [ref. 27061]; earlier selection not researched. Also designated by Costa 2006 [ref. 28708]. •Synonym of Cynolebias elongatus Steindachner 1881 -- (Costa 1995:78 [ref. 22097]). •Synonym of Megalebias elongatus (Steindachner 1881) -- (Lazara 2001:203 [ref. 25711], Costa in Reis et al. 2003:531 [ref. 27061]). •Synonym of Austrolebias elongatus (Steindachner 1881) -- (Costa 2006:57 [ref. 28708], Litz & Koerber 2014:30 [ref. 33622], Mirande & Koerber 2015:51 [ref. 35117]). Current status: Synonym of Austrolebias elongatus (Steindachner 1881). Rivulidae: Cynolebiinae. Habitat: freshwater.