Tagging experiments on blue cod (Parapercis colias) in the Marlborough Sounds, New Zealand

Abstract
From 1973 to 1976, 2430 blue cod (Parapercis colias) were tagged in the Marlborough Sounds. Tags from 84 fish (3.5%) were returned, after a mean 138 days at liberty. Of these, 71.6% had not moved significant distances. The remainder had travelled up to 41.7 km. Tag shedding rates, as indicated by multiple‐tagging experiments, were high. Results suggest that blue cod of the Marlborough Sounds and the adjacent islands belong to the same stock, and that, while some move significant distances, the majority stay in 1 place for extended periods.

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