Damsel only display???

I have a nano which houses two damsels. One has been in there for about six months, the other maybe three or four. My two don’t bother each other, but they do have their own little holes they sleep / hide in.
 
Depends how many damsels I guess. In saying that I've seen a few tanks with 6-8 damsels and they are fine. But aggressiveness towards each other may be an issue
 
If that's what you really want then go for it. If it doesn't work out you can remove some of them. Couple of key points and if your well aware of these ignore but if not always good general knowledge for more aggressive fish. And with a 200g implementing should be easy enough.

- Make plenty of different structures with rock work so they can have their own dominant area, caves nooks and crannies as well as separate structures completely

- try introducing them all roughly together to avoid an immediate dominance from one or two

- if one is super dominant remove him banish him to quarantine or the sump for a week or 2 and then bring him back.
 
Thanks. I have a 200 gal was considering filling it with a bunch of different damsels.
I have done it before with my 150G with all Fiji damsel, I bought like 100 of them and they will eliminate the weaker out and finally settled down around 60 left in tank, I have over 200 lbs of rock though and ton of flow using Hydor Magnum 8 3250 GPH to keep waste not sticking/building on rocks. I have an army of Fire Shrimp too around 20 of them for scavaging left over food.
 
I have a 66 gallon tank Damsel only. A normal reef tank with SPS and LPS.
The species - most aggressive first.
4 x Pomacentrus moluccensis, 4 x Pomacentrus alleni, 4 x Chrysiptera rollandi, 3 x Chromis retrofasciata.
They blend well together but have favorit spots. The moluccensis break through overall sometimes but now when all are established nobody gets harmed. The allenis was first in tank and all the others came on the same time.
Although the tank functions well now i am planning to restart it.
Now without the moluccensis and alleni but with Chromis retrofasciata, Chrysiptera parasema, Chrysiptera smithi and Chrysiptera talboti.
Will be interesting to see how that will work.
 
While not all-damsel, I do have five in my tank. (Seven, if you include the clowns . . . .)

It's amazing how different in behavior even closely related damsels can be. My azures hold court at the top of the reef over on the right side, darting in and out of the corals and rockwork, while my Talbott's spend their time digging underneath the rocks on the left. The pistol shrimp hasn't toppled any liverock ... but the Talbott's have . . .

~Bruce
 

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