Fin's Fish Guide
The Blue chromis (Chromis cyanea) is a saltwater fish of the family Pomacentridae that grows up to 13 cm.
Description
The blue chromis (Chromis cyanea) is a striking reef fish of the family Pomacentridae from the western Atlantic and Caribbean. The species has an oval, laterally compressed body in a brilliant cobalt blue, with black edges along the dorsal and caudal fins, and reaches about 13 cm. It lives in loose groups above coral reefs, where the fish swim in the open water column to pick zooplankton from the water; when threatened they dive quickly among the coral. Owing to its bright blue colour the species is a favourite marine aquarium fish. Like other damselfishes the males can be territorial around the nest.
Frequently asked questions
How do you recognise the Blue chromis?
The Blue chromis has a flattened, disc-shaped body, is mainly blue and shows a plain pattern. Brilliant cobalt blue with black fin edges; plankton-picking reef fish.
Where does the Blue chromis live?
The Blue chromis lives in the sea (marine waters) and is mostly found around stony or rocky ground. Coral reefs of the western Atlantic and the Caribbean.
How big does the Blue chromis get?
The Blue chromis grows to a maximum of about 13 cm.
Is the Blue chromis dangerous to humans?
No, the Blue chromis is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.
Is the Blue chromis edible?
The Blue chromis is not usually eaten.
More photos
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Chromis
More from the family Pomacentridae
Want the complete picture on the Blue chromis?
Point your camera at the fish and Fin names the species in seconds. Free, and the Blue chromis is one of 12,519 species in the app.