Given the size of the pond (900 sq. ft.) I would also be hesitant to take up biomass by adding another large species. With a breeding population of mixed-sex BG in place, that leaves the options of 1) starting over to go same sex BG and 2) harvest, harvest, harvest!

Given no larger predator, I would consider adding those FHM (and/or Gambusia) to try and turn a non-BG eco-niche into food for BG. Larger BG should be able to utilize smaller minnows, perhaps biasing the pond in favor of the larger BG sizes a little more. But with breeders in place, you're going to have to pull out pretty much all the smaller BG you can. And all the larger females as well.


"Live like you'll die tomorrow, but manage your grass like you'll live forever."
-S. M. Stirling
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