Pomacentrus moluccensis, the lemon damselfish, is a species of bony fish in the family Pomacentridae, from the Western Pacific Ocean.

It is found down to about 14 m (46 ft) in clear-water lagoons and in reefs with branching corals to provide hiding places.

This fish forms pairs during the breeding season, the female laying her eggs on the substrate and the male guarding them and fanning them to keep them well-aerated.

[4] Pomacentrus moluccensis is a coral-associated species that has been shown to decline dramatically following coral bleaching.

When faced to more aggressive fish and it is the only one Pomacentrus moluccensis in the tank, it usually turns around and swims away immediately.