Author: Cambray, J.A.
Title: Annals of the Cape Provincial Museums. Volume 19. Part 2. Seasonal Occurrence and Distribution of Nuptial Tubercles in Two African Minnows, Pseudobarbus Afer (Peters 1864) Inhabiting Clear Water and Pseudobarbus Asper (Boulenger 1911) Inhabiting Turbid Water (Cypriniformes, Cyprinidae).
Description: Cape Provincial Museum, Albany Museum, Grahamstown, Natural History. Volume 19. Part 2. 30th June 1994. Stapled wraps, p149-p170. illustrated. 184mm wide x 240mm high. New unread copy. Pseodobarbus afer (Peters 1864) and P. asper (Boulenger 1911) are a sister species which inhabit different sections of the Gamoos River system. P. afer occurs in the clear mountain streams of the Cape Fold Belt and P. asper in the turbid Karoo section of the river system. The seasonal occurrence and disappearance of tubercles for both species followed the reproductive cycle and was probably under seasonal hormonal control.

Keywords: albany museum grahamstown eastern cape cape provincial museum south southern africa african icthyology fishes minnows cyprinidae pseudobarbus afer asper


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