I feed mine floating and sinking pellets, flake, freeze dried bloodworms, brine shrimp, and tubiflex worms, they go crazy over all of it. I also throw in some veggie disks every night, they do nibble at that, but other fish eat those mostly. today i noticed them nibbling at a few of the plants and a few wayward snails that were trying to dig into the sand. mine havent exactly paired up yet, the female is ready but I dont think the male is mature enough yet. the female has already staked out a "cave" and is digging in and around it, so maybe soon i may have some little krib fry in the tank.