Fin's Fish Guide
The Blue damselfish (Chrysiptera cyanea) is a saltwater fish of the family Pomacentridae that grows up to 9 cm.
Description
The sapphire devil is a small, brightly coloured damselfish of the family Pomacentridae from the Indo-West Pacific. The species grows to about 8.5 cm; males and females differ in colour, with males having a brilliant cobalt-blue body and often an orange tail and head. It lives among rubble and coral of clear, sheltered lagoons and subtidal reef flats. As an omnivore it feeds on algae, small zooplankton and small invertebrates. In spawning the male fiercely guards the eggs laid on the bottom. The sapphire devil is popular in the marine aquarium and is harmless to humans.
Frequently asked questions
How do you recognise the Blue damselfish?
The Blue damselfish has a torpedo-shaped body, is mainly blue and shows a plain pattern. Males brilliant cobalt blue with an often orange tail; fiercely territorial reef damselfish.
Where does the Blue damselfish live?
The Blue damselfish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Indo-West Pacific; rubble and coral of clear lagoons and reef flats.
How big does the Blue damselfish get?
The Blue damselfish grows to a maximum of about 9 cm.
Is the Blue damselfish dangerous to humans?
No, the Blue damselfish is harmless to humans. None required: this species is harmless to humans.
Is the Blue damselfish edible?
The Blue damselfish 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 Chrysiptera
More from the family Pomacentridae
Want the complete picture on the Blue damselfish?
Point your camera at the fish and Fin names the species in seconds. Free, and the Blue damselfish is one of 12,519 species in the app.