Colostethus agilis
Colostethus agilis is a species of frog in the family Dendrobatidae. It is endemic to Colombia. Its natural habitats are subtropical or tropical moist montane forests and rivers. Description. "Colostethus agilis" grows to a snout-to-vent length of about with females being slightly larger than males. The head is wide and the snout short. The tympanum, situated just behind the eye, is half covered by a fold of skin. There are some white specks on the upper lip and the iris is bronze with yellow specks. The dorsal and lateral surfaces have several longitudinal rows of warts  and the general colour is olive or deep brown with darker coloured blotches. The ventral surface and the underside of the thighs are pale with yellowish blotches. There are discs on the tips of the fingers of the fore feet and smaller ones on the hind feet. "Colostethus agilis" is one of only five species of "Colostethus" that have fully webbed hind feet, the others being "Colostethus chocoensis", "Colostethus fuliginosus", "Colostethus palmatus" and "Colostethus vergeli". Distribution. "Colostethus agilis" is endemic to Colombia, where it is found in the western parts of the Cordillera Occidental at heights between above sea level . Its range extends from La Serrania de los Paraguas southwards to the Munchique National Natural Park, and it inhabits the floors of moist forests and the streams that flow through them. Status. The IUCN Red List of Threatened Species includes "Colostethus agilis" as "Endangered". Its range probably extends to less than and its numbers may be declining gradually, but it has shown some resilience and occurs in both old-growth forests and secondary forests. The main threats it faces are forestry activities, the conversion of woodland to agricultural uses (including illegal crops) and pollution of the streams in which it  is believed to breed.