Chromis cyanea

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Chromis cyanea
Chromis cyanea 2.jpg
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Pomacentridae
Genus: Chromis
Species: C. cyanea
Binomial name
Chromis cyanea
Poey, 1860

Chromis cyanea, known by the common names blue reef chromis and blue chromis, is a fish from the western Atlantic Ocean that is occasionally kept in marine aquariums.


This is a small marine fish that reaches 15 centimetres (5.9 in) in length. It is typically blue with a black margin on its back.

In the aquarium[edit]

The blue chromis are bought in groups of odd numbers. It should be kept in a tank of at least 30 gallons. It is reef-safe and will not harm fish of similar size, though it may harass smaller fish if not fed enough.