PLEASE! (begging to my fish)

My tank is getting overtaken by guppies! I tossed some of my extra guppy fry into the big tank, thinking they would make good snacks for the fish, but now I have a school of the little buggers.
I thought the BGK would take them out, or the fire eel, but seems like every day there are MORE guppies, not less. The ray just glides over them as they pick stuff off the tank bottom.
This really is a problem for me. I find myself with a glut of "feeder fish" now (guppies, platys, and cons breeding like mad!) but nothing to feed them too!
I need a fish eater, any suggestions? I have a spare 20 to put it in, maybe an arrowhead puffer?

My tank is getting overtaken by guppies! I tossed some of my extra guppy fry into the big tank, thinking they would make good snacks for the fish, but now I have a school of the little buggers.
I thought the BGK would take them out, or the fire eel, but seems like every day there are MORE guppies, not less. The ray just glides over them as they pick stuff off the tank bottom.
This really is a problem for me. I find myself with a glut of "feeder fish" now (guppies, platys, and cons breeding like mad!) but nothing to feed them too!
I need a fish eater, any suggestions? I have a spare 20 to put it in, maybe an arrowhead puffer?