Noted for the long dorsal extension
due to the specific name. Description:
All members of the Synodontis genera have
a structure called a premaxillary toothpad, which
is located on the very front of the upper jaw of the
mouth. This structure contains several rows of short,
chisel-shaped teeth. In S. filamentosus,
the toothpad forms a short, broad band. On the lower
jaw, or mandible, the teeth of Synodontis
are attached to flexible, stalk-like structures and
described as "s-shaped" or "hooked".
The number of teeth on the mandible is used to differentiate
between species; in S. filamentosus, there
are about 20 teeth on the mandible. Colouration:
The colour of the fish is greyish, with small, scattered
dark spots, and whitish on the underside. The dorsal
and caudal fins have small greyish spots and the lower
borders of the caudal fin are black. Remarks:
Very rare in imports to the hobby and probably rare
in the wild.
Nile basin, Chad, Volta and Niger basins, including
the Bénoué. Type locality:
Mouth of Lake No, White Nile.
2008 The catfishes of Africa. A handbook for identification
and maintenance. Aqualog Verlag A.C.S. GmbH, Germany.
604 p. Boulenger, George Albert (1909).
Catalogue of the fresh-water fishes of Africa in the
British museum (Natural history). London: British
Museum. pp. 460–461. Cuvier, Georges (1934). The Animal
Kingdom Arranged in Conformity with its Organization,
Volume 10. Translated by Griffith, Edward. London:
Whittaker and Co. p. 406.