I recently picked myself up a new silver arowana last monday. Its just my first time on these fishes. I bought it because my 4" vatf recently died and I was pretty depressed. My father told me to just get an arowana because he is pretty interested in arowanas. Since I'm just a beginner, I tried one. Up to now, he still isn't eating. Can't take shots because it moves too much. Can I keep it with bichirs and giant gouramis same size with it? I'm scared because my other fishes just killed my vatf.