An assorted diet, the common feeders you may get from the LFS are about the worst thing you can feed them. I wont lie from during the winter months i resort to feeding rosie reds. Surprisingly in the wild Redfin Pickerel are not primarily piscivorous. I have actually had luck feeding crickets and earthworms. Not nearly as fun to watch however much more beneficial to their over all health and growth. I wonder if the influx of pickerel questionnaires are directly related to RainbowRunner doing the massive sell off from him pond. Any other questions ill be glad to assist you with. Esox are by far my favorite species of fish.