for my crickets and meal worms I feed them Tropical Fish flakes and some old stale API shrimp pellets lol. I tried the API shrimp pellets and all my fish hated them. stupid me for trying to go cheap. So now the bugs eat them. once the bugs are full of those flakes and stale pellets I feed them to my fish. I am not sure if this is a good method, but in my mind it seems like a good way to give them nutrients.