Well, it very likely DOES. Not all diseases wreak so much havoc that they
are easily noticed, like whirling disease and that nasty virus-of-the-month
hitting the midwest. In open waters, most fish can escape heavy
infestation/infection from most diseases simply on account of the
parasites/pathogens having a smaller chance of finding them. This of course
is why most fish diseases which are not a problem in the wild are so
problematic in our tanks. Releasing sick fish into the wild is a surefire
way to introduce pathgens, either native or exotic, to that wild water, but
just how much impact that disease will have is anybody's guess.
Naturally, you guys already knew all of that, but I thought I was leading up
to some sort of point when I started this post. Alas, I have since forgotten
it.
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