I live in south Florida and have never seen BNM, I'm not sure what SFM is, we have a type of shad living in our canal system, and the one fresh water bait shop I know sells some type of shiner that when live is bass candy but usually die within a couple minutes of hitting the warm water. My experience may be different than central/northern Florida though.
I think Bob-O means SFS (spotfin shiner) not SFM.
For examples of the most common minnows, shiners, and small fish of FL see:
http://faculty.fiu.edu/~trexlerj/lab_fish_guide.pdf