Florida Museum of Natural History

Helogenes marmoratus

Helogenes marmoratus

Photo by Britt Griswold


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Helogenes marmoratus GŁnther, 1863

Identification: The possession of nine principal fin rays in the lower lobe of the caudal fin of Helogenes marmoratus distinguished the species from H. gouldingi and H. castaneus, which have eight principal rays on the lower lobe of that fin. The 39-48 anal-fin rays of H. marmoratus separates that species from H. uruyensis, which as 32-37 anal-fin rays. Maximum size: 73 mm SL.

Range: Helogenes marmoratus is known from the Atlantic drainages of Guianas, upper Orinoco and Negro systems and upper Amazon River basin.

Information from Vari, R. P. & H. Ortega. 1986. The catfishes of the Neotropical family Helogenidae (Ostariophysi: Siluroidei). Smithsonian Contributions to Zoology, 442: 1-20.


distribution map

Distribution Map




This site is part of the All Catfish Species Inventory Project

Authored by Carl J. Ferraris, Jr. and Richard P. Vari
Webpage and map compiled by Griffin E. Sheehy
Contact: Carl J. Ferraris, Jr
Updated: July 18, 2007
Carl J. Ferraris, Jr
2944 NE Couch St.
Portland, OR 97232
Richard P. Vari
Smithsonian Institution
Washington, D.C. 20560