Well yesterday I bought my first arowana
Hes named Sauron the silver arowana. Hes about 8-10 inches and is in with my 4.5 inch RTC, 6 inch albino clown knifefish, a 9 inch Florida Gar and a 4-5 inch red oscar.
Would love to see pics of this 900g tank. Does the 900g have any fish in it now? How do you know it will have room for all your fish, when yours gets too big?
I know because Ive done so on many occasions... It sounds like your doubting the legitimacy of the tank. What is it to you?