Hahaha, if it were petsmart they would say put it in a 20 gallon with other south american cichlids.
I just found out today that the chinese restaurant right next to my petsmart has an arowana, a HUGE clownknife, and a 12 inch midas (that is orange!!!! not barred) that are among other fish in a huge like 200 or 300 gallon tank....I am going to go to them if I have any questions instead of petsmart. Pretty sweet fish tank especially in a restaurant.