They often school when smaller than say 16". I would wager that LMB are more social when "young" than people might imagine. Especially if habitat and food are readily available. I watched a pair of males bed up and spawn near each other every spring for 5 years now.
Mat Peirce
1.25 acre southeast Iowa pond
LMB, BG, YP, WE, HSB, RES, BCP
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