Originally Posted by sepulatian
Now reading more I am also seeing articles that say that the juvenile (not the adult) attatches to the host fish and after feeding for 6 days it drops off to reproduce in around 3-4 more days (total of 9-10 days). How can anyone be certain of which is correct? It certainly isn't worth the risk IMO. The display should be treated in some way I think.
I trust what I said, since I have 7 years experience as a moderator in the Disease Forum with countless events of this kind with successful results.
Sepulatian, everything you read on the Internet is not always correct, even if you see it on a reliable site. Most hobbyists, even advanced or professional hobbyists don't know much about fish diseases. Like most things, people tend to specialize in areas that interest them, and fish diseases is not of major interest to most.
As for taking care of fish tanks and treating fish diseases, more is not always better. Meaning that it is not always needed to take the most aggressive route, when a simple treatment, that is effective, will resolve the problem with the least impact on the aquaria.
As for black ich, if the fish can be housed in a QT during the treatment time period, all the better. This way, whatever is in the tank, will die off by the time the treatment is completed. However, the odds are still good even if the fish is not in a QT. I would, however, hate to have to catch fish in a display tank for 5 treatments.