Mnfish - here I am! As a first comment, I agree with thoughts of one pike per quarter acre might be enough?? If it gets to 5 pounds, that is 20 pounds per acre, which is a very high biomass for northern pike. I also agree with Dwight that pike in low abundance may not be a problem and likely will help with some predation. A good example might be a pond with a high density of small largemouth bass and BIG bluegills. A low density of,pike added to that pond can result in fewer, bigger bass, but still with the bigger bluegill. The few pike crop the abundant small bass so bass growth increases, but pike must also be eating at least afew bluegills and help keep them at the large sizes.