@RatioTile It might be, probably is. I'm not 100% certain, though, as there are a lot of aquariums in the US. They don't make for a great exhibition, though, since they cannot be mixed with most other species the way more common aquarium sharks can.
Okinawa Churaumi Aquarium mixes them with Tiger (which stays near the surface), Sandbar, Silvertip, Dusky, Silky, and Sicklefin Lemon Sharks, also Bowmouth Guitarfish, Pilot Fish, barracudas, and trevallies. However, these sharks are often rotated on and off exhibit with many off-exhibit holding tanks, so the combination of sharks on display is periodically changed.
@RatioTile I've never heard of a rotational display with fish before, and certainly never with sharks! That's quite a great species list there, though.
It’s interesting to hear about how Bull Sharks are displayed overseas.
SeaWorld Gold Coast, here in Australia, mixes their Bull Shark with Loggerhead Turtle, Loggerhead x Green Turtle, Dusky Whaler, Giant Shovelnose Ray, White-spotted Guitarfish, Mangrove Whipray, Estuary Stingray, Ocellated Eagle Ray, Black-blotched Stingray, Australian Barracuda, Cobia, Giant Trevally, Golden Trevally, Red Emperor, Spangled Emperor, Mulloway, Barramundi, snappers, darts, large triggerfish, and other larger fish species. They used to have Tiger Shark as well but I don’t think it was successful.