After another generation or 2 CB rays will face 'boy in the bubble' syndrome. Wilds have stronger immune systems. The behavior of CB rays will start to change also. Selective breeding for looks instead of random breeding based on fitness will guarantee it.
The difference will become like the difference between a wolf and a poodle. You may not notice these differences yet, but it will definitely happen, as it has with all other long term captive bred fish species.