Fishes from the Río Alvarado drainage, Upper Río Magdalena Basin, Colombia Albornoz-Garzón, Juan G. Conde-Saldaña, Cristhian C. López-Delgado, Edwin O. García-Melo, Jorge E. Villa-Navarro, Francisco A. Check List 2020 2020-09-18 16 5 1181 1198 Regan, 1904 Regan 1904 [810,1213,1655,1680] Magnoliopsida Melastomataceae Chaetostoma Plantae Myrtales 8 1189 Tracheophyta species thomsoni   Figure 3J   Material examined.  COLOMBIA• 66, 23.0– 69.2 mm SL; Quebrada La Caima; 04°35′45.8″N, 074°56′39.6″W;  374 ma.s.l.;  19 Sep. 2012; Cristhian C. Conde-Saldaña, Juan G. Albornoz-Garzónleg.; CZUT-IC 10121. • 14, 25.5–97.1 mm SL; Río Alvarado-Chucuní; 04°27′56.7″N, 075°03′46.7″W;  697 ma.s.l.;  19 Sep. 2012; Juan G. Albor- noz-Garzón, Cristhian C. Conde-Saldañaleg.; CZUT-IC 10219.  Identification.Distal portion of snout without plates. Interoperculum with four to five odontodes. Caudal pedun- cle with five rows of plates. Anal fin rays I, 5. Caudal fin emarginated with lower portion longer than upper portion. Light spots usually concentrated on head. Fins with white to yellow bands. Distal margin along caudal fin pale, more evident at tips ( Regan 1904). 2012-09-19 SL, C, G Cristhian & Conde-Saldana & Juan & Albornoz-Garzon Colombia 374 4.5960555 Quebrada La Caima 1 -74.944336 8 1189 CZUT-IC 10121 1 2012-09-19 SL, G, C Juan & Cristhian & Conde-Saldana Colombia 697 4.4657497 Rio Alvarado-Chucuni 1 -75.06297 8 1189 CZUT-IC 10219 1