Nope sorry, you can't change those things. Jim is working on developing a new 3D background that will replace this one. It will be twice as wide and will include camera panning to be able to see the whole tank. Because of the collision detection needed to keep the fish from swimming through items in the tank, it just won't work that way. But stay tuned, hopefully in a few months Jim will be rolling out the new background and there are specialty creatures and other program updates planned.
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