Damselfish can refer to any of the following:
- The family Pomacentridae, comprising about 350 species of marine fish;
- All members of that family other than the Clownfishes
- One of a number of species belonging to the family Pomacentridae, most usually Chromis chromis. Many other species within the family have common names that include the word "damselfish", but in almost all cases this is qualified with an adjective or other descriptor.
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