Ya don't wanna loose that beauty. My buddy has a dovii that barely ate for 6 months. Water was 80° and he dropped it down to 75 and dude started eating like a pig. Play with water parameters find his sweet spot. Don't know if you are original owner but possibly it grew up in a bigger tank or was in community tank or was part of a pair since juvenile. Never know. Think outside the box. Try some frozen peas or small piece of chicken off the BBQ, piece of cheese whatever. I have a trimac that got real cold last winter and he didn't eat for months. I don't know how he lived. Seems like once they get primed they go back to their gluttony ways. Be patient he's worth it...get him a little lady? Pm me I'll send you one