Size: There is a fair amount of conflicting opinion as to the eventual size of the species 60cm/24" long being one of them - and while this is quite possible, in my experience I have never raised one any larger than 30cm/12".
Aquarium care: The minimum size tank for a single fish would be 120 x 45 x 45cm (48" x 18" x 18"), and 180 x 45 x 45cm (60" x 18" x 18") for a couple. The best set-up includes plenty of cover in the way of plants, driftwood, etc. Standard, fairly bright lights will be fine, so long as you provide them with cover so they have a good sense of security. Avoid any sharp tank d�cor.