HELP WITH FLOWERHORN GENDER

Can anyone tell me the gender of this flower horn as I’m trying to raise a male for breeding. I have a female flowerhorn about 7 inches already laying and this flowerhorn is about 3 months and i think was looking like a boy but asking for help? He is very aggressive towards just my regular pleco in the tank which makes me think he is a boy plus his head but I’m not sure. I don’t feel comfortable venting as I didn’t do the other one, I just waited for it to lay. I’ve posted this before but if anyone has a good or better guess lmk now.

Judging form the size of the head, I' thinking it's probably a male. I'm not a flowerhorn expert though, so maybe someone else can give you a definite answer.