Hi guys, I recently notice someone on my 180 gallon reef is nipping on my corals, I had notice a hairy mushroom missing pieces and the perpetrator was my blue tang, yes the blue tang, they're not supposed to eat coral but this one nipps on the hairy mushroom, any way, I recently add 2 wrasses, a canary wrasse and a red wrasse with no issues for the first months, but today when I got home from work, I notice that someone was nipping on my purple monti, red monti, and some zoas, and they eat almost half of the hairy mushroom. I watched the red wrasse nipping on the gsp, wicht fish should I take out? Just the wrasses? Or the blue tang as well? I thought this 3 fishies don't eat coral!!!! Thanks any advice will be appreciated.