I should mention that the average temp in the pond ranges from the low 50's to high 60's in the summer so it may be too low to properly grow the warm water fish. Are there bluegill varieties available for the tempos I mentioned. Of course we get to 39 F at the bottom in the early spring, late fall and winter. Maybe I should stick with the Rainbows yet through in 20 or so browns to feed on the small bluegills and perch already there. Ideas