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 4T7HL Eigenmann & Henn, 1916 Eigenmann & Henn 1916 Actinopterygii Rivulidae Rivulus Animalia Cyprinodontiformes 11 1192 Chordata species magdalenae Cynodonichthys   Figure 4G   Material examined.  COLOMBIA• 11, 16.9–45.7 mmSL; Quebrada La Manjarres; 04°28′19.3″N, 075°04′26.9″W;  758 ma.s.l.;  19 Sep. 2012; Juan G.Albor- noz-Garzón, Cristhian C. Conde-Saldañaleg.; CZUT-IC 10208. • 13, 19.9–44.6 mmSL; Quebrada La Manjarres; 04°28′19.3″N, 075°04′26.9″W;  758 ma.s.l.;  12 Dec. 2012; Juan G. Albornoz-Garzón, Cristhian C. Conde-Saldañaleg.; CZUT-IC 10439.  Identification.Head scaled, except for cheek. Mouth su- perior. Longitudinal series of scales 40–42. Body col- oration of live males brown, sides of body bluish, from humeral region to caudal peduncle, with a lateral irregular series of red spots. Dorsal and anal fins with red spots on basal half, distal half yellow with thin dark pur- ple band on distal margin. Caudal fin dark purple along procurrent rays, distal portion yellow and white. Pectoral and pelvic fins yellowish. Body coloration of live fe- males brown, with scattered dark blotches along sides. Dorsal and anal fins with dark spots. Pelvic and pectoral fins hyaline. A dark spot on upper portion of caudal pe- duncle ( Henn 1916). 2012-09-19 Juan G. & Cristhian C. Conde-Saldana Colombia 758 4.472028 Quebrada La Manjarres 1 -75.074135 11 1192 CZUT-IC 10208 1 2012-12-12 Juan G. Albornoz-Garzon & Cristhian C. Conde-Saldana Colombia 758 4.472028 Quebrada La Manjarres 1 -75.074135 11 1192 CZUT-IC 10439 1