Age and growth of Diplodus sargus capensis and D. cervinus hottentotus (Sparidae) on the Tsitsikamma coast, South Africa

The age and growth of Diplodus sargus capensis and D. cervinus hottentotus, sampled on the Tsitsikamma coast, was determined using sectioned sagittal otoliths. Both species were characterised by slow, allometric growth and in the sample were aged to a maximum age of 21 and 33 years respectively. While similar to many other sparid species, the growth rate estimated for D. s. capensis was considerably slower than that obtained in the Mediterranean. This discrepancy emphasises the need for more rigorous validation of ageing in sparid species. Management and conservation of these species is discussed in relation to their importance in the shore based recreational fishery in South Africa.