All my fish are dead...
Hi Rob
If you have had the Kole and the Zebrasomas in the tank for awhile and they are getting along fine I would not worry about it.
A problem usually occurs when you are trying to introduce a new tang into a tank that already contains a zebrasomas species, as they can be very aggressive to new introductions. Thats why most people will tell you to make a Zebrasomas species tang as the final addition to your tank.
Dale
PS. Like the others have already said all new fish should be quarantined. No matter how good the LFS is they can not guarantee a fish to be 100% problem free. It is up to you as well as the LFS to observe the fish at the store and decide it's condition. If it does not look right for some reason then you should not buy it and they should not sell it to you.
Having said that,it is still possible for a completely heathly looking fish to cause different types of problems when introduced to a new tank. Thats where a Q tank comes in.
I myself have never used a Q tank. I know I should and I know the risks of not using one, but I have had very few problems with new fish introductions. Just pure luck. I have also never in 10 years of keeping SW fish and reefs and a lifetime of keeping FW fish taken a fish back to a LFS and told them that one of their fish died prematurely or killed other fish in my tank.
As long as the LFS does everything possible not to sell you a sick unhealthy fish, the rest is up to the hobbyist. It's up to us to do everything we can to insure that the fish we take home and the others already in the tank have the best chance at survival.
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