2 years ago we stocked fathead minnows into a five acre duck marsh with the hopes of being able to trap our own minnows to stock into largemouth and smallmouth bass grow out ponds. In the first year we had no issues with yellow grub but this year our minnows are very abundant but infested with the yellow grub parasite. It is not really feasible to keep the herons away with any sort of deterrent to my knowledge and the snail population is now abundant. Our plan is to stock redear sunfish this fall with the hope of lowering the snail population and over time getting rid of at least some of the yellow grub. Our worries are that the redear sunfish are going to eventually take over with the absence of predators in the pond and we will not be able to trap a large number of minnows. I know that minnows are not the primary food source for redear sunfish but will they still eventually decimate the minnow population?

We are also concerned about whether or not to feed the parasite ridden fish to the bass we are growing out. I would say the majority of the minnows have the grub on them and some are absolutely covered in it. I did not think it transfers fish to fish but will there be negative effects on our bass if we trap and stock minnows that are covered in the grub into the grow out ponds as forage? We were counting on this additional forage to supplement our grow out ponds but do not want to cause harm to the bass. Would appreciate any insight or advice!