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The species composition, seasonal abundance and spatial distribution of the fish fauna of the Mbashe estuary (S km long) was determined by means of gill nets. During the 37 month survey period, 290S fish (2319,S kg), comprising 27 species, were caught. The family Mugilidae, representing 5S,S% of the numbers and 57,4% of the biomass, predominated the catches. In terms of biomass M. cepha/us, A. h%/epidotus and P. commersonnii were the most important species. Seasonal pattems for 10 of the 27 species were observed.M. cepha/us, A. h%/epidotus and L. amia were more abundant in spring/summer, E machnata and V.buchanani in spring, P. commersonnii and L. tricuspidens increased numerically in winter and M. capensis in autumn, Johnius dussumieri and Va/amugil cunnesius were rare in winter and summer, respectively. Largest catches were made in the middle reaches of the estuary followed by the upper and lower reaches, respectively.Die spesiesamestelling, seisoenverspreiding, en voor1

The species composition, seasonal abundance and spatial distribution of the fish fauna of the Mtata estuary (8,5 km long) was determined by means of gill nets. Nine hundred and ninety fish (462,9 kg) comprising 26 species were caught of which M. cephalus (43,3%), A. hololepidotus (18,9%), P. commersonnii (7,9%), E. machnata (7,1%) and L. amia (5,45) were most abundant in terms of biomass. Mullet species constituted 48,3% of the biomass caught, representing 25,6% of the numbers. Seasonal patterns were ascertained for M.