African sharptooth catfish
Europe, inland waters
Recirculation aquaculture system (RAS)
Catfish gets a good rating on the VISwijzer because the aquaculture does not lead to negative effects on the direct environment and the fish does not need a large amount of wild fish to grow. A unique feature is that a large part of the Dutch catfish is killed humanely.
The African sharptooth catfish (Clarias gariepinus) is a fish species that has been farmed for 30 years in the Netherlands. In nature they can reach a length of 1,50 meters and a weight of 60 kg, however in the Netherlands they get a weight of a few kilo’s.
Catfish have a special organ which allows them to get oxygen from the air, a lack of oxygen is therefore less of a problem. They can generally live with well with other specimens of the species, even stronger, the more space a catfish has available, the more territorial it gets.