there are threats known in the Luapula-Mweru region
(overfishing), the species is listed as Least Concern
because it has a relatively broad distribution. Colouration:
Body is a yellowish/brown colour with round irregularely
arranged black spots. The humeral process and all
the fins display smaller spots. Diet:
As a whole, species of Synodontis are omnivores, consuming
insect larvae, algae, gastropods, bivalves, sponges,
crustaceans, and the eggs of other fishes. Reproduction:
The reproductive habits of most of the species of
Synodontis are not known, beyond some instances
of obtaining egg counts from gravid females. Spawning
likely occurs during the flooding season between July
and October, and pairs swim in unison during spawning.
The growth rate is rapid in the first year, then slows
down as the fish age. Etymology:
The specific name (polystigma) refers to
being many spotted. Remarks:
Not seen very often in the hobby in imports.
Upper Lualaba, Lake Mweru and Luapula up to Johnston
Falls (upper Congo River basin) in Democratic Republic
of the Congo and Zambia. Type locality:
Rivière Luapula, à Kasenga; lac Moero,
à Lukonzolwa [restricted to lac Moëro
by lectotype designation].
1986. Mochokidae. p. 105-152. In J. Daget, J.-P. Gosse
and D.F.E. Thys van den Audenaerde (eds.) Check-list
of the freshwater fishes of Africa (CLOFFA). ISNB,
Brussels, MRAC, Tervuren; and ORSTOM, Paris. Vol.
2. Froese, R. and D. Pauly.
Editors. 2019. FishBase. World Wide Web electronic
publication. www.fishbase.org, ( 12/2019 ). Seegers, L. 2008 The catfishes of
Africa. A handbook for identification and maintenance.
Aqualog Verlag A.C.S. GmbH, Germany. 604 p. Ferraris, C.J. Jr., 2007. Checklist
of catfishes, recent and fossil (Osteichthyes: Siluriformes),
and catalogue of siluriform primary types. Zootaxa
1418:1-628. Moelants, T. 2010. Synodontis polystigma.
The IUCN Red List of Threatened Species 2010.