[bartwilk]

I got this fish about 3 months ego.
It was my first fish in my 55 gallon reef aquarium, the first two three weeks it was nice and blue then I added more fish, and it started loosing it's colors, sometimes it's almost gray.
She is the king of the aquarium, lots of caves in the rocks, eats everything I put in there.
What could be wrong.

 

[50seven]

Damselfish change colour as they age and become sexually mature, usually to darker or more drab colours. This change is often brought on by a need to assert dominance when new tank mates are added. I would think this might be what has happened...

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[bartwilk]

Thanks 50seven