Helicops pastazae, also known commonly as Shreve's keelback and la culebra de agua de Pastaza in South American Spanish, is a species of snake in the subfamily Dipsadinae of the family Colubridae. The species is native to northwestern South America.

Etymology The specific name, pastazae, refers to the Pastaza River.

Description Helicops pastazae may attain a total length (tail included) of .Bernal, R. (2025).

Geographic distribution Helicops pastazae is found in Bolivia, Colombia, Ecuador, Peru, and Venezuela. www.reptile-database.org.

Habitat The preferred natural habitat of Helicops pastazae is freshwater wetlands in forest, at elevations of .

Behavior Helicops pastazae is semiaquatic.

Diet Helicops pastazae preys upon freshwater fishes.

Reproduction Helicops pastazae is ovoviviparous.

References

Further reading

396 pp. (Helicops pastazae, pp. 314–315). (in Spanish). (in English, with an abstract in Spanish). (Helicops pastazae, pp. 4–10, Figures 2–6). (Helicops pastazæ, new species, pp. 129–130).