Chromis' war?

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partypalooza5

Aquarium Advice Addict
Joined
Mar 28, 2009
Messages
1,274
Location
Texas
This may be the wrong topic to post under but I'm worried. I got 5 chromis, at first they were doing fine. Now two of them (the smaller ones) have nip marks from the bigger chromis. I put one down in the sump to keep him away from everyone for a while, is this OK to do? Also, is it normal for them to fight?
 
Well, one's gone :(. Now all of a sudden the other 4 are getting along fine. Strange...

Is it a good idea to separate an injured fish by moving him to the sump? There aren't any open pump intakes or things the fish can really get hurt on.
 
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