Mine just started, he never bothered with them before, he gets other things like pellets, etc. My Pacus love them and eat them up like cookies. One day I dropped one down a tree trunk decoration so my Pleco could get some because the Pacu's always steal them from him. The Pacu's were trying to get under it but they were too big and my Red Oscar saw them (hates Pacus) and he darted towards the wafer and grabbed it up and swallowed it. Ever since then he will swallow them whole. Funny to watch, it's like he's doing it just to piss off the Pacu.