Type locality, Pura, Alor Islands, BPBM 37348 (holotype of Chromis pura, 6.76 cm SL). Known only from its type locality, about 1.6 km west of the island of Alor, between the mouth of Kalabahi Bay on Alor and the island of Pantar. It is a small circular, steep-sided volcanic island which rises abruptly from the sea, amplifying the already strong, deep currents in the passage and is one of the last volcanic islands in the Lesser Sunda chain as one progresses eastward into a region of uplifted karst. The habitat consists of a sloping, rocky bottom exposed to strong currents (Ref. 78145).