Mormyrus proboscirostris

Mormyrus proboscirostris Boulenger, 1898

Original Published Description:

Boulenger, G. A. (1898).  Matériaux pour la faune du Congo. Poissons nouveaux du Congo. Première Partie. Mormyres. Annales du Musee du Congo (Ser. Zoology). 1, 1-20, Pls. 1-9.
Languages: English


General Description

From Boulenger (1909), pp. 141-142

Depth of body 4 1/4 to 4½  times in total length, length of head 3 2/3  to 3 4/5  times. Upper profile of head descending in a curve; snout much produced, trunk-like, a little longer than postocular part of the head, its length 3½ to 4½  times its least depth; mouth very small, lower jaw slightly projecting, with thick lips; teeth notched, 5 or 7 in upper jaw, 12 or 14 in lower; eye small, its diameter 5 ½  to 7 ½  times in length of snout, twice in interorbital width. Dorsal 75-82, originating well in advance of base of ventral, nearly 5 times as long as anal, once and ¼  as long as its distance from end of snout. Anal 19-20, originating at equal distance from base of pectoral and from base of caudal. Pectoral obtusely pointed, nearly ½  length of head, ventral 1/3  length of head. Caudal densely scaled, with rounded lobes. Caudal peduncle 1 ½ to 2 times as long as deep, 1/3 or less than 1/3 length of head.

95-100 scales in lateral line, 21-26 / 28-32 in transverse series on body, 32-36 in transverse series between dorsal and anal, 18-20 round caudal peduncle. Pinkish or brown, sometimes with a broad bluish-grey stripe extending along each side of the body and tail.

 Total length 570 millim.
Upper Congo.—Type in Congo Museum, Tervuren

Author(s): G.A. Boulenger; Sullivan, John P.
Rights holder(s): G.A. Boulenger

Ecology and Distribution


Widespread in Congo River and major affluents.  See Fishbase for museum records and localities.

Author(s): Sullivan, John P.
Rights holder(s): Sullivan, John P.

Taxonomic Notes

Holotype (unique): MRAC 127. Regarded by Reizer and others as a subspecies of Mormyrus rume C.&V., but here regarded as a species.


Banister, K. E., & Bailey R. G. (1979).  Fishes collected by the Zaïre River Expedition, 1974-75. Zoological Journal of the Linnean Society. 66,
Boulenger, G. A. (1898).  Matériaux pour la faune du Congo. Poissons nouveaux du Congo. Première Partie. Mormyres. Annales du Musee du Congo (Ser. Zoology). 1, 1-20, Pls. 1-9.
Boulenger, G. A. (1899).  A revision of the genera and species of fishes of the family Mormyridae. Proceedings of the General Meetings for Scientific Business of the Zoological Society of London. 1898, 775-821.
Boulenger, G. A. (1909).  Catalogue of the Fresh-Water Fishes of Africa in the British Museum (Natural History). I, 373. London: British Museum (Natural History).
David, L., & Poll M. (1937).  Contribution à la faune ichthyologique du Congo Belge: Collections du Dr. H. Schouteden (1924-1926) et d'autres récolteurs. Annales du Musée du Congo Belge (Série 1). 3 (fasc. 5), 189–294.
Harder, W. (2000).  The Mormyridae and other Osteoglossomorpha (CD-ROM). World Biodiversity Database, CD-ROM Series. 2000, New York: Springer Verlag, ETI-UNESCO.
Moller, P., Schugardt C., & Kirschbaum F. (2004).  Permanent and seasonal expressions of sexual dimorphisms in a weakly electric fish, Mormyrus rume proboscirostris Boulenger 1898 (Mormyridae, Teleostei). Environmental Biology of Fishes. 70, 175–184.
Poll, M. (1939).  Les Poissons du Stanley-Pool. Annales du Musée du Congo belge. C.–Zoologie Série I.. 4, 1-60.
Poll, M. (1967).  Contribution à la Faune Ichthyologique de l'Angola. Publicações Culturais. 381. Lisbon: Companhia de Diamantes de Angola.
Reizer, C. (1964).  Revision systematique et raciation des Morymyrus de L'Afrique Centrale. Annales du Musee Royal de l'Afrique Centrale Serie 8 Sciences Zoologiques. 133, 1–60, Pls. 1–6.
Roberts, T. R., & Stewart D. J. (1976).  An ecological and systematics survey of fishes in the rapids of the Lower Zaïre or Congo River. Bulletin of the Museum of Comparative Zoology. 147, 239–317.
FileSize (kb)Uploaded
Roberts & Stewart 1976.pdf2731.92010-12-07T20:24:40Z
Moller et al 2004.pdf304.82011-02-08T18:11:13Z
Banister & Bailey 1979.pdf1562.92011-04-06T17:08:49Z