LOL... a panther grouper eh..
If this is to be your first fish, you will also be planning either an
FO or
FOWLR set up. These guys are no where near reef safe and will even eat smaller fish. Much akin to any other predator fish. If it fits in it's mouth, it's lunch.
Also keep in mind these are very large growing fish and should be housed in a large system, preferabley 150+....
Cheers
Steve