Finally getting back into the game. I have a standard 180 gal with a colony of guppies. Maybe around 200 or so. How long do you think theyll last. If I added 3x baby silvers. 5-6" long? Is it possible to have 3 together? I had 1 before with bichers and a bunch of other fish. I just want an arowana only tank. Just one is boring to me.