Chelmon vs Atlantic Blue Tang

I think they are suggesting you relocate one of the fish to the sump temporarily.

Reading through the thread, it seems your options are pretty limited, but you could still try the following:
-Since you can't rearrange the rock work, you could trying adding some more "terrain" to the tank temporarily (i.e. you could add some rocks or decorations to the tank to try and make it feel new for the tang - I doubt it would be as effective as rearranging the rockwork already in there, but it's a low risk option to try and help).

-Add more mirrors (more mirrors = more fish for the tang to fight? I have no idea if this would be effective or not, but I would love to find out).

-Feed more than normal for a while - it's hard to fight when fat, happy, and eating.

-Take the tang out and reintroduce it to the tank (I know you mentioned this isn't possible, but it could be particularly helpful if you pulled the tang, added some temporary rocks/decor, then added the tang again after a few days - so I thought I would mention it anyway).

-Introduce a few (several) more fish to try and spread the tang's aggression out (depend on your tank and current stock list, this could be a really bad idea).
 
I'm already using mirrors. The tank is a fight club, the only not interested in mirrors is the ABT...
Feeding A LOT , like 1 artemia cube every hour all day long, there is always something in the water....

What I could do is put the CBB in the nursery for a week, but I don't know if this would be effective.
 
The only other thing I can think of is someone in another thread mentioned having aggression issues until they switched what they were feeding. You could give that a shot, but I'd guess the odds of success are low.

I'm not an expert, but I'd guess if you take the CBB out for a week, it will just start getting attacked again when you put it back in. You really need to disrupt the tang, not the CBB here.
 
The only other thing I can think of is someone in another thread mentioned having aggression issues until they switched what they were feeding. You could give that a shot, but I'd guess the odds of success are low.

I'm not an expert, but I'd guess if you take the CBB out for a week, it will just start getting attacked again when you put it back in. You really need to disrupt the tang, not the CBB here.

Well, i'll not take out the CBB, i'll put it in the nursery, in the same tank with the tang. The tank would be able to see the CBB from the nursery acrylic
 
Your only option is to keep one of the fish, Either you make the choice or your tang is going to make the choice for you. A new copperband will not survive being chased and attacked by your tang. Either the tang will kill it, or force the CBB into a corner and it will stop eating and die. This is not the solution you want but you have been told that this is what will happen. You can keep the tang OR the CBB. Not both, these are the cards you have been dealt and what we all take as a risk with tangs. You cannot go back and forth to a nursery for the duration of these fishes lives.

I dont not mean to be harsh, but all the options to reduce aggression you either cannot do, or are not capable of doing. This leads to one thing, a choice has to be made.
 
120x70x50
this tang is here from 6 months or so.
the copperband from 2 days
This is centimeters, I assume?

I would just get rid of the Atlantic blue, since it needs a ton of space.
 
I hope you are wrong :beaming-face-with-smiling-eyes:
When I saw my damsel killing another damsel, it was fighitng it every day, following everywhere with no stop.

This one seems to be a little bit more pacific, it doesn't follow the CBB, it just defend it's territory (as big as the tank :beaming-face-with-smiling-eyes: :beaming-face-with-smiling-eyes: ) but when the CBB is in the corner, the tangs goes away. Sometimes cames back just to see without biting and without dosing anything harmful , just to see what's happening.

So, I think there is a chance... when lights are off (only tank light, room light still on) , the tang stops immediatly to fight and just ignore the CBB
My scopas did the same thing, it doesn’t directly kill the CBB but it will stress it until the fish is on deaths door.
 
centimeters but i have plan to increase the size
You need Atleast a 6’ for an Acanthurus tang, personally I think this tang needs Atleast 7’ if not 8’ of tank though. They get big, aggressive and tall as well.
 
trapping the tang is almost impossible...
Its not going to be a fun process, but weve all had to do it at one point. If you decide getting rid of the tang is what you want to do, try and see if your LFS will give you some credit for it.
 
Its not going to be a fun process, but weve all had to do it at one point. If you decide getting rid of the tang is what you want to do, try and see if your LFS will give you some credit for it.
let's see in the next couple of days.

actually they are all eating together and CBB Is able to swim freely with very rare attacks (not bites) o_O
 
centimeters but i have plan to increase the size
How big are you thinking, and when?

I have not seen, in person or pics on the internet, a healthy adult Atlantic blue outside of snorkeling in the Caribbean or at a public aquarium.
 
How big are you thinking, and when?

I have not seen, in person or pics on the internet, a healthy adult Atlantic blue outside of snorkeling in the Caribbean or at a public aquarium.
Probably 180x80x50, less than a year.

Keep in mind that ABT is smaller than many other tangs we have in our tanks.... It's 25cm on avarage, 39 the bigger one, in nature. A "standard" desjardinii is bigger, 40cm max, 32cm avarage.....

Even a leucosternon is bigger in nature, 54cm max
 

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