Also, interestingly, I've just been looking at this page:-
And, I've found:-
"This is one of those species that are better off not being purposely quarantined; put another way, IMO
(in my opinion), the stress induced via isolation and re-moving Paracanthurus is generally more harmful than the risk of introduction of some contagion. I would run newcomers through a preventative bath/dip of pH adjusted freshwater and promptly place them in the main/display unit."
Which is interesting...
What are other peoples' thoughts on QT
'ing a Regal Tang? Since it's susceptible to ich, I would've thought it a neccessity...