Angel questions

[reptile guy]

I've had lots of flames over the years and never had a problem with any of them nipping at anything at all and this new one was fine for months not touching nothing until one day it decided man these corals taste great lets try to eat them all lol( mostly just the expensive ones by the way lol ). Just goes to show you how no two are alike and now having to catch him in a 210 filled with rock and coral on a tall stand is gonna be a nightmare. I'm never adding an angel to a lps tank again cause seems only a matter of time before they start to sample a few things unless it's in a tank where they can be easily caught cause my flame isn't remotely worth the $700 dollars in corals he was picking on (luckily except for my nice acan nothing has been overly harmed)