keeping bull sharks in freshwater?

[FLESHY]

gigas and gars would make a great snack for it.

True...AND...NO BULLS LIVE THERE WHOLE LIFE IN FRESHWATER.

Until recently it was thought that some bulls in nicaragua lived their whole life in their large freshwater lake it has recently been shown that they come there for a time and then leap and swim back to salt water... Not to mention the fact that bulls AVERAGE 8 feet in length, and can probably get up to 14'. (Ive personally seen 12' in the wild) Good luck, if it works Ill be the first to want to see it, it will be probably the sickest thing ever.

 

[Zoodiver]

Bulls and alligator gar wouldn't be hard to do at all. Both handle fresh/brackish/salt water just fine. I've kept gator gar and other sharks (sandbar, sandtiger, blacktips etc...).