I dont use feeders but my fish get a real assortment, so many different types and brands of flake, sinking/floating pellet, tablets etc... different frozen foods, krill/mysis. Mussle cockle, prawn, sprats, lancefish
Anything and everything... lol w/ 8 tanks I have more fish food containers then most people have food in their cupboards... and I have a mini fridge/freezer just for my fish stuff. Other then live, and prepared foods. I raid the fresh produce dept at the grocery store. fish fillets, fresh veggies, anything I think my fish might like.
I buy just about all of my fish from www.kensfish.com. His prices and selection are awesome. I buy most of my maintenance items from him as well. My fish are all healthy and gaining bulk at a very fast rate.
Oh, I feed no live food except for an occasional insect or work I find around the house.
I used to feed market shrimps and tilapia. Now they're all getting pellets and krills. Get them on pellets if you want to make it easier for you in the long run.