I have a 60g a 90g and a 210 that are currently empty. I have more tanks then that just these are the options for the arrowanas. I want to get like 3 or 4 or 5 silver arrowanas probly be about 3-6in. and 2 or 3 Jardini arrowanas about 2-4in. and put them together. What tank should I put them in first? I heard that to big of a tank and they establish territory, to small and they fight. How do I make this work. Please help.