I have a flame and a longnose. My longnose is a model citizen. My flame, on the other hand, was nicknamed Murderous Murdock and has since been relocated to another tank. Not only did he wipe out all my cleaner shrimp, one of my fire shrimp and wounded another... but he also ate my barnacle blenny and a dragonette... then went after my randall goby, but was unsuccessful. He killed snails, crabs (even my poor porcelain crab for kicks - didn't even eat it in the end). He started attacking one of my clownfish, and that was his downfall. Since my clowns stay pretty high in the tank, he would attack then go back to a rock he was perching on, rest for a second or two, then attack again. After a little while of this, he was pretty tuckered out, and I was able to swoop him out without a lot of effort.
Very cool fish and full of personality, but he is best suited in a tank that does not have small fish or inverts. Mine was probably on the extreme end of the killing spectrum, but nonetheless, it's a risk. Mine is just a juvenile... can't even imagine the damage he would have done as an adult...
Right now, the smallest fish he's in with is an adult lemon peel angelfish and a juvenile bellus angelfish. He's fine in there, and entirely entertaining... but I'm still keeping an eye on him just in case.
