How's it going guys? I don't know much about arowana's at all, but I want to get one. I was wondering what kind I would be able to keep in a 150g. Currently I have a large Clown knife, an endli bichir, a red tailed catfish and a tiger shovelnose catfish. The catfish wont be in there for long b/c they're getting too big so they're going into my friend's large indoor pond soon. Thanks in advance.