I GOT MINE TO EAT KRILL!!!!!!!! but then it died when I had to move it to my exodon tank... he ate krill when i threw them into the outflow of my AC110... I figured the exodons never bothered any other tankmates, but they were all catfish, so it was a terrible and ignorant mistake. starve them then krill them, it worked for me, but not everybody else.
Will probably keep them by themselves. They have very sharp teeth. Probably need to cover their tank too to prevent them from wrecking havoc in an adjoining tank.