I have never heard of a cray being a picky eater. Mine eats everything. Even tries to eat the fake plants! I imagine your cray will make food out of the GBR soon...Can someone tell me directly what to feed my new crayfish and german blue ram? They're both picky eaters and I don't want to get a bunch of food and just hope that they like it. (2 separate tanks and probably 2 separate foods.) What do you feed your GBRs and crayfish?