with a tank like that, the only problem you'll have is size difference. well I'd suggest a pair of endli endlis and a pair or ornates (or a pair of endli endli and 2 fem ornates, keeping just one male). they both have relatively the same max size ( 3-6 inches difference) but an inch or two in growth rate. plus they'd make a great addition to your tank w/ your current substrate
nice tank, would love to see a green or another asian aro in that tank
