Thaanks everyone. I couldn't believe how much his kok has grown either. it was like over night too. One day he was like the previous update and then the next he had blown up. My buddy came over last thrusday and then again this tues. and he said omg his head's gotten huge. He also said that he was ugly, lol, he's not a fish person by the way.
I don't know what the secret is or anything. Being that this is my first male, i have no idea what i'm doing right or wrong, he's just turning out real nicely. hopefully he'll get bigger than my female and they will breed.
thanks again everyone, i'll update again in a month