mexicanus, Gobiesox Briggs [J. C.] & Miller [R. R.] 1960:7, Pls. 2-3 [Occasional Papers of the Museum of Zoology University of Michigan No. 616; ref. 11899] Río Coyuquilla, 60 miles by road southeast of Zihuatenejo, Guerrero, Mexico. Holotype: UMMZ 177318. Paratypes: ANSP 91026 (1); FMNH 62808 (1); CAS-SU 53205 (1); UBC 59-651 (1); UMMZ 177317 (2), 177319-21 (3); USNM 179687 (1). Type catalog: Böhlke 1984:104 [ref. 13621], Ibarra & Stewart 1987:41 [ref. 12367]. •Valid as Gobiesox mexicanus Briggs & Miller 1960 -- (Espinosa Pérez et al. 1993:31 [ref. 22290], Espinosa Pérez & Castro-Aguirre 1996:125 [ref. 21635], Castro-Aguirre et al. 1999:471 [ref. 24550], Ferraris in Reis et al. 2003:511 [ref. 27061], Nelson et al. 2004:168 [ref. 27807], Miller 2006:388 [ref. 28615], Scharpf 2009:11 [ref. 30400], Page et al. 2013:173 [ref. 32708], Conway et al. 2017:[9] [ref. 35287], Page et al. 2023:152 [ref. 40505]). Current status: Valid as Gobiesox mexicanus Briggs & Miller 1960. Gobiesocidae: Gobiesocinae. Distribution: Southern North America: Pacific Slope (Mexico). Habitat: freshwater.