The Ptereleotris brachyptera lives in the reef-associated, marine, depth range 20 - 38 m environment.
The dartfish Ptereleotris brachyptera is described as a new species from eight specimens from Ngargol Island, Palau, and one from Majuro Atoll, Marshall Islands, from lagoons on silty sand and rubble substrata in 20 to 38 m depth. The type specimens, 39.1 to 58. More