Fishes from the Río Alvarado drainage, Upper Río Magdalena Basin, Colombia Author Albornoz-Garzón, Juan G. Author Conde-Saldaña, Cristhian C. Author López-Delgado, Edwin O. Author García-Melo, Jorge E. Author Villa-Navarro, Francisco A. text Check List 2020 2020-09-18 16 5 1181 1198 http://dx.doi.org/10.15560/16.5.1181 journal article 10.15560/16.5.1181 1809-127X Sturisomatichthys leightoni (Regan, 1912) Figure 4A Material examined. COLOMBIA • 13, 32.8–69 mm SL; Río Alvarado-Caldas Viejo ; 04°36′41.2″N , 074°55′ 46.2″W ; 351 m a.s.l. ; 19 Sep. 2012 ; Cristhian C. Conde- Saldaña , Juan G. Albornoz-Garzón leg.; CZUT-IC 10063 . • 19, 24.3–92.3 mm SL; Río Alvarado-Caldas Viejo ; 04°36′41.2″N , 074°55′46.2″W ; 351 m a.s.l. ; 19 Sep. 2012 ; Cristhian C. Conde-Saldaña , Juan G. Albornoz- Garzón leg.; CZUT-IC 10082 . Identification. Reticulations on predorsal, supraoccipital, and interorbital regions. Rostrum present. Cleithral width: 11.0–14.1% SL. Coalescent plates 13–16. Dorsal, pectoral, pelvic, and anal fins lacking filaments. A thin dorsolateral stripe discontinuous and ill-marked present. Dorsal, pectoral, pelvic, and anal fins lacking large, dark blotches occupying almost the entire fin (Londoño-Bur- bano and Reis 2019).