Tropical Fish Keeping - Aquarium fish care and resources

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jsm11482 09-18-2007 11:27 PM

Adding outsider discus to established community
Am I asking for trouble if I add a similarly-sized single discus to my already established community of 6 discus? Of course I would quarantine it first; don't want anything to happen to the original 6 though.


jim21 09-19-2007 05:50 PM

I've been through that situation twice, with mixed results.

First time was a smaller tank (30g) and only 4 discus adding a 5th (all 2-3"). Went great - fish acted like they were long lost pals waiting to reunite.

Second time was a bigger tank (55g), 5 discus (had been relocated from the 30), adding a 6th (fish now ~4"). Didn't go so good. The new guy got chased a lot, especially at feeding times. I ended up taking him out after a short while, putting him in a isolation tank, and power feeding him for a week or 2. He got a little bigger than the others, went back in, and was able to hold his own much better. Still gets chased some, but not anymore than the others.

Wish I could give you a more concrete answer, but thats how it happened for me.

Good luck!

Lupin 09-19-2007 05:51 PM

The original 6 may bully it but this will soon stop as they become accustomed to the newcomer's presence.

herefishy 09-19-2007 06:11 PM

If you decide to add another discus to the tank, I would rearrange to tank's furnishings and add the fish under the cover of darkness.

jsm11482 09-19-2007 06:12 PM

Cool. I was more worried about health concerns. Any info there?

Lupin 09-19-2007 06:20 PM


Originally Posted by jsm11482
Cool. I was more worried about health concerns. Any info there?

Just quarantine the new discus to be safe. The longer it is quarantined, the easier to bet your current discus will be safe.

herefishy 09-19-2007 08:38 PM

Quarantining is the safe way. I only quarantine fish that I buy that are not from my lfs's. I also quarantine ALL wild caught fish that I recieve.

jsm11482 09-19-2007 10:08 PM

Yes, I quarantine all my fish for a week before adding them to the real tank(s). Thanks for the input!

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