I had one a long time ago, and I fed her raw chicken liver. I'd cut it into small pieces, about half the size of a BB, and 4 or 5 of those pieces in each bay of an ice cube tray. I'd fill the tray with water, and put it in the freezer. I'd feed her ever 3 or 4 days. Just pop out a cube, and drop it in the tank. I had that frog for 9 years until it found a small gap in the tank canopy to jump out of.