Chromis cyanea, also known as Blue Reef Chromis, or just Blue Chromis is a fish from the western Atlantic Ocean

Atlantic Ocean

The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

 that occasionally is kept in marine aquariums.

Appearance

A small marine fish that reaches 15 cm (6 inches) in length. It is typically blue with a black margin on its back.

In the Aquarium

The Blue Chromis should be bought in groups of odd numbers (1,3,5,7... etc...) a 30 gallon aquarium is recommended for these, if not more. They get along with others of the Chromis species, again, in odd numbers. They are reef safe and will not harm fish of similar size, they may pick on small fish if not fed enough.

Sources

• fishbase Page on blue chromis
• aquacon.com page on damselfish
• thatpetplace.com page on Blue Reef Chromis