Rufiji River
Fuelleborn's squeaker ("Synodontis fuelleborni") is a species of upside-down catfish that is native to Tanzania where it is found in Lake Rukwa and the Rufiji River basin. It was first described by Franz Martin Hilgendorf and Paul Pappenheim in 1903, from a specimen collected at Lake Rukwa. The species name "fuelleborni" is named in honor of Prof. Dr. F. Fülleborn, who collected the original sample.