You might also want to try feeding earthworms, cut in halves or quarters, frozen krill, and small chunks of fresh raw or frozen market shrimp. Like stated above, regular partial water changes, try to keep it's strees level low, and keep the ph. between 6.4 to 7.2 and try to make sure to retreive any uneat'in scrapps of food when it's done feeding, for better water quality. This may sound cruel, but put two or three not too aggresive dithers in with him/her, because fish fins are a large part of it's natural diet while in it's juvie stages, plus it will help in coaxing the fish to be less shy & reclusive. Hope that helps, GL. with your rhom. bro! when you can, put up a pic, I'de love to see the l'il monsterfish!!