Oh my, they are a little chubby there.
Are they confined in a small area? They do need some adventure room for exercise and exploring.
Less food is necessary at this point.
But most of them do look large in length for their age. Their color and skin look good too. I have raised some that are front heavy in color and then in six months the rear color starts coming in, so you do have to wait a while to see the change. But only keep the front heavy ones if the colors are sharp and deep.
I don't know what your set up is like, but I would release the big heavy set ones into a large main pond with the big guys so they could loose some weigth. It's all a bit of work, isn't it.
Thanks for sharing. It's easier when we can learn from each other.