To continue CJ's thoughts: let's guess that the 10-acre pond in CT can support 10 pounds of pike per acre. That's a reasonable guess in a "hypothetical" situation.

So, the question is, do we want the pond to have 20 5-pound pike (2/acre) or 10 10-pound pike (1/acre). We don't need much reproduction (or stocking) to maintain this population unless we plan a lot of harvest.