Blue Chromis can't get along??? Help!

[Mike 1911A1]

I recently setup a 90gal tank and added two blue chromis. They seemed to get along ok (the big one would chase the small one but not too much). I just added a third blue chromis that's about the same size as the big one. The big one continues to chases and nibble at the new one. I think the new one is stressed as all he does is hide and breathes heavy. If anyone has any ideas, please let me know. I afraid the new addition isn't going to live if this keeps up.

Thanks,

Mike
:eek2:

[PiNaPLeX]

Mike,

From what i've read, chromis are supposed to be in odd numbered sets. I have 3 myself, and they went through the same behavior when they were first in the tank. I had one that hid all the time also. I believe its their way of establishing dominance and a hierarchy in their group. After a few weeks, mine all seem to be fine now, just give them time to work out their pecking order.

[Dubbin1]

[welcome]
As PiNaPLe said they should be introduced into the tank in odd numbers.

[MAreefer1]

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