Pomacentrus alleni, the Andaman damsel, is a marine ray-finned fish in the damselfish family Pomacentridae, found in the eastern Indian Ocean.
Etymology The specific name of this fish honors the ichthyologist Gerald R. Allen of the Western Australia Museum in Perth.
Description This fish is overall neon blue, but its anal fin is yellow and there is a broad black streak along the lower part of the caudal peduncle and caudal fin. It may reach up to 6 cm in length.
Relationship to humans This fish occasionally makes its way into the aquarium trade.
References
External links
Allen's Damsel @ Fishes of Australia