down here in bama some people add threadfin shad,,However the lmb slowly eradicate them,and no doubt the channel cats would get some,,His bluegills should provide adequate forage, fertilizing when then water warms would probably be the best bang for the bucks ,on a 1 acre pond the cost per application of liquid fertilizer wouldn't be much,,Main thing is fish it and keep the 3/4 # LMB,,Down here if you don't,,they all wind up that size,,The recommendations on mine when it was overpopulated with lmb was 2 1/2 +,leave em to eat the lil ones,,lessn that fry em,,,,just my take,no biologist here