Mine will eat krill, and I'm finding out it will eat (peeled) smaller pieces better than a whole krill, but I think he's eating my snails, too. He's (or she's) quite large, with a body that's as big as my ring finger. I wanted to try him on something else, too. I wouldn't want to eat the same thing every day. Krill is so ....... cannibalistic, but "big fish eat little fish".