I had seen some video's regarding people feeding them big sized crabs with shell's on, so, is there any benefit's of feeding them crab's? And if there are, should I first remove the shell and feed the flesh or just keep the shell for added nutrition? Though I don't wanna make my tank more messy because of keeping shell on but at the same time removing the flesh of the crab very time I feed them is quite the added burden besides thawing frozen food