I just got 2 silver aros(3",4"), and 1 jardini aro(3"). They r all housed in my little 10g tank(20"x10"x12") which was used for neons.
I'm going to get bigger tank soon.
1 gold jardini
1 standard jardini
both were 1.5" when purchased about a month ago. they are 2-2.5" now. currently in a 75g grow tank (so they won't be an expensive snack lol)
eating feeder guppies, freeze dried blood worms, small crickets
10'' silver arow, and one 7'' lima shovelnose currently in a 120 gallon 60''x18''x26''
will be upgrading tank in the next 3 months. It most likely will be a 250dd 60''x36''x30''
my aquarium includes 1 silver arowana @ 19" and 4 stingrays and a few clown loache.
aquarium 200cm/60cm/60cm filteration is 2X external dry filter running @ 150GPH each