I feed this tank 5 times a day. I go through 2 blocks of krill a day. They are all well fed, and he gets more than his share. There is always extra food after the inital feedings, and he's always cruising around eating.
I have european night crawlers, but my basement got too hot for them. So I have to move the bins upstairs.
This guy has started eating pretty much anything I put in here, except for silversides. He doesn't like them.
Everyone says that flowers are not aggressive eaters.. but I don't know if that applies to this guy. He's all over the other rays when it's feeding time. He will sit in the pile of food in the tank, and charge everyone away.
My motoros are very docile, and are not aggressive eaters since they get fed so often.