I voted 'yes' for three reasons:
1. Nobody had done it yet - - LOL
2. If enhancement became an accepted practice, it seems unlikely that they would advertise the fact that it is chromosomally enhanced in the supermarket's fish display case.
3. I like the name Frankentrout
(gather 'round kids... we're having Frankentrout tonight)
I notice they only talk about increasing the size and appearance by taking away its body's innate tendency to waste precious energy on developing a useless reproductive system.