Our Pyrenees hates water. He'll just run around the pond chasing geese from one side to the other.

Can mink have a significant impact on the fish population in a 1 acre pond? The populations of LMB and BG seem lower than they once were and I don't see LMB over about 2.5 lbs. The CC seem to be growing well though (I do not feed). Could I be losing a lot throgh the overflow pipe (15" pipe)? The pond can get pretty flooded during storms but the emergency spillway rarly kicks in, and when it does, it only carries a couple inches of water and flows very slowly.