Lesleybird I had a regular regal that was the same way, it did eat a shell fish, but freeze the shell fish first. I ended up not knowing about that crucial step and fed it and it ate like a champ along with a big blue line trigger in a different tank (took the leftovers to it) and they both died in 2 days. So, take from this there was a picky regal, but it did eat raw shell fish (oyster in this case). Should have used a live clam.