Is there an aquarium in the store?

All Bass Pro Shops have aquariums

Yes

Yep there's a big tank in middle of the store that's made to look like your in a cave. There's a quarantine tank that's Northeast corner of store. And a stream next to the snack shack. This is at the Grapevine store.

yes, 2 different ones.

Yes, right in the center of the store and its stocked with various fresh water fish and turtles

Yes very cool!

Yes its a big one inside the store