balsanus, Profundulus Ahl [E.] 1935:108 [Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin 1935 (nos 1-3); ref. 13864] Río Balsas system, Malinaltepec, Guerrero, Mexico. Lectotype: ZMB 21094. Paralectotypes: UMMZ 157291 [ex ZMB] (2), ZMB 31465 [ex ZMB 21094] (now 5); four missing. Type catalog and lectotype designation: Paepke & Seegers 1986:149 [ref. 19981]. Types mentioned: Paepke 1995:95 [ref. 21847]. •Synonym of Profundulus punctatus (Günther 1866) -- (Lazara 2001:262 [ref. 25711]). •Valid as Profundulus balsanus Ahl 1935 -- (Doadrio et al. 1999:764 [ref. 25146], Morcillo et al. 2016:250 [ref. 34082], Jamangapé O et al. 2016:55 [ref. 34797], Matamoros et al. 2018:245 [ref. 35924], Del Moral-Flores et al. 2020:1194 [ref. 37841], Calixto-Rojas et al. 2021:[7] [ref. 38250], Dominguez-Cisneros et al. 2021:956 [ref. 38718], Domínguez-Cisneros et al. 2023:13 [ref. 40116]). Current status: Valid as Profundulus balsanus Ahl 1935. Profundulidae. Distribution: Southern North America: Pacific slope of Mexico. Habitat: freshwater.