The most popular squeaker catfish (Synodontis) by far is the upside-down catfish (Synodontis nigriventris) from the Congo. It is not the only species of the genus that often (by no means always) swims on its back, but it remains small (under 10 cm) by squeaker catfish standards and is one of the most peaceful representatives of this genus. It is important to keep it in groups of preferably more than 10 individuals, because the species is very social. Among each other these fish even communicate with creaking noises, which they also make loudly protesting when you catch them and lift them out of the water with the net.
The big eye indicates it: these catfish like it twilight. The aquarium should therefore not be lit too brightly, otherwise the fish will hide.
Concerning food and water values, upside-down catfish are unproblematic, they eat any usual fish food and feel comfortable in any tap water suitable as drinking water. The water temperature should be between 22 and 28°C. There are hardly any external sex differences. In animals of the same age the females are bigger and fuller from the time of sexual maturity (with 5-6 cm length). Upside-down catfish spawn hidden, they are free spawners, these fish practise no brood care.
For our customers: the animals have code 183402 on our stocklist. Please note that we only supply the wholesale trade.
Text & photos: Frank Schäfer