Peacock Grouper Identification Guide
Tell the peacock grouper apart by its dark blue-gray body scattered with small pale blue spots and faint bars.
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Key identification features
- Dark blue-gray to blackish-brown body covered in numerous small, pale blue to white spots resembling eyespots
- Faint, broad darker bars sometimes visible crossing the body, especially in stressed or displaying fish
- Rounded tail fin, also speckled with the same small pale spots
- Compact, moderately deep hind-type body shape
- Overall dark base coloration distinguishes it from most brightly colored reef basses
Common look-alikes
- Coral hind: shares small blue spotting but has a bright orange-red base color instead of peacock grouper's dark blue-gray to blackish body.
- Blacktip grouper: has larger dark blotches and black-edged fins rather than uniform small round spots covering the whole body.
- Blue-spotted grouper: similar spotting pattern but a lighter olive-brown base color and less pronounced dark barring.
Where you'll see one
Native to the Indo-Pacific, peacock grouper live around coral reefs, lagoons, and rocky reef edges from shallow flats down to moderate depths; the species has also become an established, aggressive invasive predator on reefs around the Hawaiian Islands, where it now competes with native reef fish for shelter and prey.
Frequently asked questions
How can I tell a peacock grouper from a coral hind?
Base body color is the key: peacock grouper is dark blue-gray to blackish, while coral hind is bright orange-red, even though both carry small pale blue spots.
Why might I see a peacock grouper in Hawaii if it's an Indo-Pacific species?
It was introduced there and has become established as a predator on reef fish, so it now shows up outside its native range.