Pomacentrus alleni

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.