Have had a nice male rd in my 90 for about a week now. About 10 in very active aggressive and healthy looking always displaying and digging. Problem is I have yet to see him eat anything ive offered hikari gold nightcrawlers frozen krill and bloodworms but it all lays on the bottom till I net it out later a few krills seem to disappear over night so maybe hes eating them or they could be just buried by his constant mound building any ideas?