Nymphargus siren

Nymphargus siren (common name: Rio Coca Cochran frog) is a species of frog in the family Centrolenidae, formerly placed in Cochranella. It is found in Colombia, Ecuador, and Peru. Its natural habitats are pre-montane forests near streams. It is threatened by habitat loss.

Adult males of Nymphargus siren measure 20 - 22 mm in snout–vent length. Snout is truncate and dorsal skin is shagreen with spinules.