am i mistaken or are you thinking about buying a shark?!?!
not to be mean here but you're making a few mistakes hehe
1. its a saltwater fish
2. they get huge and fast
3. even if you could put a saltwater shark in such a small tank with these other fish, they would eat every last thing you have, and then some.
But if you have a saltwater tank thats 125 gallons or more, you can take care of them relativly easy. They will eat anything that can fit into their mouths, so its a good idea to have tank mates be similar sizes. As far as food goes, anything meaty. Large feeder goldfish, squid etc etc.
But once again,, ITS A SALT WATER SHARK! lol cant be putting that in a small freshwater tank.
If you would, the shark would swell up like a balloon and die, read up on osmosis and why fish can survive in saltwater
