Branchinecta brushi is a species of fairy shrimp found at an altitude of 5,930 m (19,460 ft) in the Chilean Andes.

[1] In common with other fairy shrimp, the males bear complex structures on their second antennae, which are used in mating.

[1] Branchinecta brushi shares the record for the crustacean living at the highest altitude with the copepod Boeckella palustris, also found in the same pool.

[1] Crustaceans are rarely associated with life at high altitudes, but fairy shrimp such as B. brushi produce dormant cysts which are capable of surviving prolonged desiccation, and aid in dispersal.

[1] The closed nature of the water body probably reduces the risk of predation, allowing B. brushi to complete its life cycle.