MrTuskfish
Team RC
I would say your tank is much more than fully stocked now, with fish that will have compatibility issues in the future. I would not add the shark.
I agree with the previous poster about certain of the species you keep likely to pick on sharks. As he mentioned, in the US, most zoos will not accept hobbyists fish. Have you already got a zoo to agree to take a shark or other large fish from you? Some of your current fish will also outgrow the tank.
If you want to have a shark, I'd set up a dedicated tank just for the shark.
On the internet, you can find just about any story to support what you want to do, often from people with little or no long-term experience. In my opinion, it is wisest to listen to the people who have long-term, real world experience with sharks (alprazo).
+1 I can't imagine tossing a shark into this mix; but I'll bet you do it anyhow.