So be it. We do enough tinkering with our ocean habitats simply by overdeveloping our waterfronts and failing to protect the watershed from agricultural runoff.
Add genetically manipulated aquaculture and strip mining to that list, and what chance do the fish have, realistically?
It would only be a matter of time before something unpredictable and detrimental happened.
Why risk it?
We might as well genetically engineer a fish with a target on its back.