Short story is a have a 10 gallon nano with a few corals that I’ve had a singular clown fish in for several months (bought at petco - no QT) and has been very healthy. Last week, I made an impulse buy of a juvenile orange storm clownfish to put with her (also from petco and no QT). Knowing that was a risk, but willing to give it a try. My question is, the original fish developed what appeared to be Brook just over the last several days and died overnight (new fish appears well thus far). I guess I’m just curious, is it possible to have an asymptomatic carrier of Brook that I brought in with the new fish or did it lay dormant in my original clown until maybe it got a little stressed with the new addition? (I don’t have a QT protocol or tank for this little nano, but obviously want to be careful if this other little fish survives and I choose to try to add again in the future). Thanks for the input!