ALL fishes are 50/50 reefsafe
Just post here if you having/had a reefsafe fish/fishes that turns to non reefsafe.
I'll go first..
1.Used to have a blue hippo that one day started to take the liking in nipping at Brain coral.
2. Also had a common cleaner wrasse that cleans every fishes but like to attacks (not cleaning) Longhorn Cowfish (got a warning from another member,but did not beleive it til it happens).
Reefing is just like cooking, all the ingredients have to be just right , except you don't have to bring the water to a BOIL...