I've owned nine ponds of various sizes, and managed several dozen others, and to be quite frank, I'm having a hard time thinking of any two ponds that weren't significantly different in character.
Bruce, that's VERY true. One client has 4 ponds on his place. 2 of them were completed within a year of each other, and both were approximately the same size, and stocked with the same fish. One only had a windmill aeration system, the other had a windmill AND an electric compressor system. One winterkilled 2 years ago, the other one didn't. Same depth, etc. Both were actually light on fish numbers.