Are we talking about the same animal? Flame Scallop (Lima scabra)? Had mine for 5 months and he's doing great. Very easy to care for although, not very exciting. They don't like the bright light and hide behind the rocks.
Once, I saw him fine tune his position by extending his tongue (for lack of the correct term) and pull himself,.. juuust a scosh closer to the rock. Very cool.
As for feeding, oh boy. I thought a "filter feeder" didn't need any :P I didn't feed for two months! In hindsight - this sounds completely impossible, given the previous posts. Today, (mainly because of other corals) I feed DT and cyclop-eeze. He's doing quite well. I must have been awfully lucky. Alllll that ignorance, and he still made it