While looking up information on gars, I was introduced to arowana. Is it possible to keep the two together, at least temporarily, and I also was wondering if it would be possible to build an indoor arowana pond? I know that a good cover would be necessary to prevent the fish from jumping out, but is there any other crucial information necessary for an indoor pond? I have a new 20ft x 20ft piece of pond liner that I can use for the project, but I would also like to use part of it to make a small feeder fish pond and a small quarantine/water change pond; both would be part of the unit I would build that would contain the arowana pond.