I agree with PETA on this one. (Let me go disinfect my brain.)
Seriously, though, this would look cool, but would be really bad for the fish.
Now having a saltwater tank that size in my living room would be much better (for the fish AND for me).
I don’t know (or care) a lot about fish, so I’ll go with the “look cool” over the poor fish. Could be worse - they could be out in the ocean about to be eaten by a bigger fish.