???, you mean where to get it or what to feed?
Get it at the grocery store or at the LFS
you could do squid, shrimp, clams, snails, hermits, urchins. Urchins would deff. be creative
Is that hard enough? Right now I just feed him krill that is still frozen, and some stuff my lfs sells that has a mix of stuff. Are krill shells hard enough?
Crab leg clipped in a nori clip, Raw Shrimp, Cray Fish, Mussels, Clams, Snails and so on...... Thaw your foods before feeding and soak them in vitamins.....
Kaye