gaigei, Gambusia Hubbs [C. L.] 1929:3 [Occasional Papers of the Museum of Zoology University of Michigan No. 198; ref. 15900] A slough close to the Rio Grande at Boquillas, Brewster County, Texas, U.S.A. Holotype: UMMZ 84527. Paratypes: UMMZ 84528 (orig. 62, now 59, 5 c&s), USNM 117534 [ex UMMZ 84528] (3). Type catalog: Parenti et al. 1999:7 [ref. 24072]. •Valid as Gambusia gaigei Hubbs 1929 -- (Rosen & Bailey 1963:104 [ref. 7067], Lee et al. 1980:540 [ref. 22416], Wildrick et al. 1985:1054 [ref. 11519], Rauchenberger 1989:3 [ref. 15687], Page & Burr 1991:238 [ref. 18983], Parenti et al. 1999:7 [ref. 24072], Garrett & Edwards 2003:783 [ref. 27258], Nelson et al. 2004:103 [ref. 27807], Lucinda & Reis 2005:41 [ref. 29205], Miller 2006:221 [ref. 28615], Scharpf 2007:17 [ref. 30398], Meyer et al. 2010:13 [ref. 30817], Page & Burr 2011:448 [ref. 31215], Page et al. 2013:109 [ref. 32708], Meyer 2015:67 [ref. 34698], Huber 2019:62 [ref. 36941], Page et al. 2023:145 [ref. 40505]). Current status: Valid as Gambusia gaigei Hubbs 1929. Poeciliidae: Poeciliinae. Distribution: North America: Rio Grande drainage, Texas (U.S.A.). Habitat: freshwater.