I bought a few new fish for my 130 gal saltwater system along with a few new corals. I introduced two false perculas and two tomato clowns to the tank along with three emerald crabs. I had one false percula already in the tank before the new additions. I also introduced a large leather, 3 hammer corals, a small toadstool coral a pulsing Xenia and some green star polyps. All corals are doing fine. One of the false perculas died right away, which I figured to be transportation stress. However, yesterday a second percula (the one that I've had several months...not a new addition) was swimming in circles, unable to use his right pectoral fin...almost as if paralyzed on one side, and he croaked last night. Is there any problem with perculas and corals that may cause them to be stung and killed?
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