| Key to the species of Heterobranchus. |
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| Teugels, G.G., B. Denayer and M. Legendre 1990. A systematic revision of the African catfish genus Heterobranchus Geoffroy-Saint-Hilaire, 1809 (Pisces: Clariidae). Zool. J. Linn. Soc. 98:237-257. Ref No [270] Key No. [42] |