Haha, I'm fattening them up now. Unfortunately even with weighted down lids 2 Teugelsi's still managed to knock it off, jump out of the tank, and die. One of them was my pick 15" female at that.
I really want to stick it out and try to keep them in an aquarium until the Bichir Bichirs pattern up, but I think I may have to put them in a pond. The bichir bichirs hit food hard and I'm afraid they'll damage themselves badly and the Teugelsi's are just too unpredictable.