Abstract

Growth and age of the anchovy Engraulis capensis from South West Africa were determined from otoliths collected during the period 1979—1981, and the results were substantiated by length frequency modal r progression and scanning electron microscope studies. Length frequency was analysed through the years 1971—1981. Two methods were used to determine the time of ring formation: the percentage of hyaline and opaque edges and back-calculation. There are two hyaline rings, one being clearly visible, well formed and laid down in June/July, and the other a diffuse, faint one laid down in November/December. A method of age determination is described where 1 January is used as the birthdate. The maximum age reliably read from an otolith was 3 years. The fastest growth took place in the first year of life (to 62,5 per cent of the maximum length).

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