Jade perch farmed in Belgium is done in a recirculation system (RAS), that filters and reuses most of the water. Jade perch is omnivorous, but due to sustainability reasons there is chosen to only use plant-based feed. This way there is no pressure on wild fish populations. There is a collaboration with the neighbouring tomato greenhouse, where the waste products from the fish are used as fertilizer for the tomato plants. This way there is also no eutrophication of the surrounding waters. Antibiotics have a negative effect on the bio-filters, so they are not used.