Well that's great...between the yellow tang harrassing them and them harrassing each other..they should have a long and happy life.
The sensible thing to do would be to remove the yellow tang and let one copperband (the one that eat the best and is the fattest) get acclimated for a month in the display, sell the other copperband (100 gallons is way too small to keep 2 copperband) and then introduce the yellow tang once the copperband is acclimated.
The one on the left is not going to live much longer from what I can see. it's quite thin and stressed.
Also if you give them mysis, it is best to give them PE mysis as they are much more rich in fatty acid than the regular mysis.
A copperband goes through a colony of aiptasia in no time, no need for 2.
You already tried one and failed, then you're going through the same mistakes again as the yellow tang will definitly harrass both of them. I don't think they are "eating well" either because mine got to a skinny bony thing to a very beautiful fat and healthy fish in 10 only days...yours are skinny still after 3 weeks, especialy the one on the left. You may think they eat well but they don't. After 3 weeks of eating well they should have gained their fat pad back. Sorry if I sound harsh but the copperband is my favorite fish as they have such sweet personality and it sadden me to see this.
It also sound as if your quarantine tank is connected to your main tank? if that is so, then it's useless since any disease will quickly spread to the main tank. I surely hope I got that part wrong.
It is very misleading to see a bunch of copperband fish together at the store and they seem to get along great. They have no territory to defend or associate with as most of these tanks are empty of anything. It's the same with discus. Put a bunch of discus in an empty tank with nothing in it and they will get along great...then put a piece of driftwood and they will start to fight for the possesion of this wood.
Quote:
Originally Posted by Reef Pilot
I have a 6 foot 100 g display tank that is very mature, going for 10 years or so. We just moved into this house 7 months ago, so it was all inherited. The display is doing well with the fish and corals, but is full of aiptasia, so that is why I wanted a Copperband.
I tried a single Copperband back last Aug. Didn't have a QT tank ready, so put him in with the other fish. Problem was I have a bully yellow tang that would harass him, and kept him to one corner of the tank. Despite that, he would eat stuff in the live rocks, and picked away at small aiptaisia. However, I could not get him to eat any of frozen and other foods that the rest of my fish ate. Even tried chopped up live clams, and would put them into a little container with holes in it for him to pick out. But soon the other fish figured that out, and again, he could not compete with them.
So after 2 months, he was getting very skinny indeed, and I returned him to the pet shop. At least he never did get sick, and if I had a QT tank, I think I could have saved him.
Reef Pilot
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