Bass and Tilapia reproduce at different H2) temperature. If you are seeing Tilapia making beds/spawning, you are at least a month behind the LMB spawn.
Get a really small mesh net, and scoop it through the "Cloud" of what you think are bass fry, or run a 4" crank bait through the cloud. Daddy LMB might take offense and bite on the crankbait.
I've ripped a treble hook through the cloud and impaled a few small fish on it, and they've had a horizontal stripe with black tipped tails - LMB fry.
