Without a forage base the LMB and BCP will consume anything they can get into their mouth. I had a similar thing in my 5 ac puddle. I stocked fhm with CNBG,RES and BCP and 50 full grown BG. Next fall was fishing and caught a 3# LMB! That I didn�t stock! Started seeing juvenile LMB all over the place! Someone was so kind as to bucket stock an unknown number of LMB in my pond and it has taken a lot of work to get the population under control so the BG could catch up.