I alwasy kept them well fed, on big silvercides, and grill, they would hardly ever fight, the queen was nasty though, i got bit once while moving around rocks and he alwasy used to attack the net and the heater skimmer ect , the orginal plan was to just get the queen and a minatus grouper , but my LFS found a red sea show undjulated it had bright orange dots on the face, instead of the lines, so i had to get it. The clown trigger my frined had, but was harrasing all his other fish, so i took him in. It was expensive though to keep them fed, and constant water changed where a must, even with the skimmer and 2 ehiem filters, they were just nasty eaters.