The Green Severum is a peaceful species, suitable for communities of non-aggressive medium-large sized fish. In the wild, the gentle Green Severum can be found in slow-moving waters packed with heavy with vegetation. Therefore the aquarium should include plenty of robust plant species along with numerous rocky caves and bogwood pieces. Green Severums can be kept in groups or pairs, but should a pair choose to spawn in a community setting, they will become much more aggressive towards the other fish. Ideally the tank will be at least 4ft long with lots of visual barriers for the other fish to escape the Green Severums attentions. Male fish can be sexed by the presence of cheek markings lacking in the smaller females. If the male seems to overly harass the female, many aquarists find that adding a couple more females will help to spread the brunt of the aggression. After a time, these fish learn to "˜recognise"™ their owner and often come to the glass to greet them or wait for food. A gold variety of this species is also available.