i've been feeding my lima guppies and tuffies, but can't get him to accept any non-live food. i've tried hikari sinking waffers and pellets, silversides and shrimp (my jordan's cat developed a taste for them so i thought i'd give it a go), and frozen clumps of brine shrimp. he tried the pellets and waffers and spat them out, wouldn't even go near the other stuff. i tried not feeding him for a couple of days to make him less discriminating, with no success. in case you're wondering i know he's not eating any of it because it is still in the tank the next morning. has anyone had any luck with any particular food, or am i stuck getting live food every week?