For God's sake man. When you post something like this, please make at least a small attempt to get the interpretation correct.
LOOK AT THE VIDEO!
The scientist did not say that the fish are already mutating. He said, "We might see . . . fish with mutated gills or fins; things like that. WE DON'T NOW WHAT WE ARE GOING TO SEE."
I put that in caps to make sure you see where you have gone wrong.
It is posts like yours that contribute to the plethora of lies and bad science that is reported on the internet as truth. You owe it to yourself and to others not to foster such garbage.
Mutations are what happens to organisms in future generations. The spill is not even a year old and it is way too early to even begin to see mutative changes.