i just bought a 5inch silver arowana last week and bought 3 inch australian arowana. They go thru well but when i came back after school. My australian arowana got suck up in the overhead filter. And some of its scales are gone and has a bite mark on its belly. But my silver arowana has no physical damages what so ever. Can you help me how to put them both together? Because i'm planning to buy another australian gold arowana.