I encourage you to go for your goal of a tank raised big or trophy BG. You and hopefully us can learn some more good information about groing big sunfish / BG. Concerning which BG grows bigger. Note the Lake Havasu record was a redear sunfish and your plan is to work with bluegill; two different species. Two different genetic foundations. IMO the male BG will grow bigger because it puts less nutrient energy into gametes compared to females; more body length can be created. If your trophy size is based on weight rather than length the female full of eggs would be the one with more body mass prespawn.


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