Even though Northern & Fla LMB are the same species, they ARE subspecies with notable differences (both good and bad, depending on one's location and goals).

F1 LMB have 50% Northern genes and 50% Fla genes. Fx offpsring resulting from the F1s will not have a 50-50 mix of genes and traits; as a result some of the Fx LMB would be "inferior" compared to the F1s from most standpoints (although which mxitures of Fla & Northern genes in the Fx bass are inferior would depend on your location & goals).

If left alone, surviving Fx offspring in the out years would tend to have whatever mix of Northern & Fla genes that did the best in a particular BOW (based on conditions there & management practices). I believe it is the desire to maintain the full spectrum of both Northern AND Fla genes in a bass population that lead many PMs (ewest, for example, IIRC) to stock both Northern and FLa Bass in addition to F1s so that both sets of genes are introduced into bass offspring in the out years.

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