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