Version 2.0 killer

This big bully ended up killing off most of my tank. He also released a toxin that turned my hand, and much of my arm that touched the water bright red. All that survived his wrath was my False Perc, and his hosting Anemone.
Beware, he has quite a sting as well... use gloves and goggles when handling ANY coral/anemone. These guys can pack quite the wallop.

I suspect what shocked and killed him (and got him slaughtering the rest of my tank) was a change in salinity. I noticed the telltale swirling when I was mixing LFS water and Tank water to help him acclimate, but only gave him a single step, and didn't drip acclimate.