When I was a kid we put 4 sterile grass carp in one of our ponds that was overgrown with hydrilla. They cleaned it up and lived for probably 15 years until the pond went dry. They were kinda neat, always swam in a school you’d never see just one. And by the end they were probably close to 40” long.
I don’t know about eating tilapia, I’ve read that their natural food source is hippo schit, not my kind of eating fish. Never ate one since I don’t buy fish and there aren’t any around so I could be wrong. I’m just thinking that every pond I fish is a place where cattle water so I know what they’ll be eating.
