well your local market should have some? But you can feed the senegal live blackworms, pellets, frozen foods like bloodworms, silversides Etc. Also stay away from feeders. they carry diesease, and parasites
I think he's talking about Tilapia Fillet. I buy mine in bulk at the grocery store. They come individually frozen. I put one in the fridge in the morning and when I get home after work I cut it up and feed all my fish. Now they are up to three fillets a night! It's a very cheap way to feed. Cheaper than shrimp in my area.