bacteria? I'll be honest, it can be common in LFS
in the systems that are all plumbed together.
If one is careful, it can be managed though. The tomini tang that I have in my tank I watched for a couple of weeks in my LFS
. Guy was fat and no signs of disease through the entire time it was there. There was cyano
in the tank, but no signs of issue with this fish...though there were in some in other systems. One must be careful with this as if ich is in one tank it is in all of them if the systems are plumbed together.
Doing a proper quarantine can reduce the likelihood of introducing something into your system. I took a gamble and acclimated it right into my display, where it is still a happy fat bugger to this day.
So, moral of the story if you are comfortable with the skills you've perfected over time and have watched a fish for a lengthy period of time...it is possible to pull a fish out of such an environment without issue.