The upside-down catfish Synodontis nigriventris is the most popular species from the species-rich genus Synodontis. The comical behavior of these animals, which prefer to swim belly-up, is certainly the main reason for this. In addition, the species remains small, well under 10 cm. In fact, we have never seen animals larger than about 7 cm (including the tail fin). More information about the species can be found here: https://www.aquariumglaser.de/en/fisharchive/synodontis-nigriventris-4/
In addition to this species, we also occasionally have the “zebra” in stock. As far as we know, this species comes exclusively from the Lac Mai Ndombe area, a huge blackwater lake in central Congo. It differs from the “common” upside-down catfish in its extremely contrasting coloration, especially on the belly. The species name “nigriventris” means “with a black belly.” The belly of the common upside-down catfish is dark in color. If you look closely, you can see black dots on a dark background. In the “zebra,” however, the belly coloration consists of a complex marble pattern that is different for each individual fish. Overall, the pattern of the “Zebra” is reminiscent of the juvenile coloration of several Synodontis species.
In terms of all care aspects and final size, the “Zebra” does not differ from the common upside-down catfish, except that it is perhaps even a little more social. It is almost impossible to photograph a single specimen when there are several in the aquarium.
For our customers: The animals have code 183413 on our stock list. Please note that we only supply wholesale.
Text & photos: Frank Schäfer
