The impact of unregulated fishing on the size distribution of a fish population in a temperate upland stream pool

Abstract

The fish population in an isolated stream pool (Chulma Stream, S. Korea) was investigated from July to February 2001–2. Large size (> 100 mm TL) of Zacco temmincki and Z. platypus were abundant (> 50% of total collected individuals). However, unregulated recreational fishing during August and September dramatically changed the size frequency distribution of the population, with large individuals declining to < 10% of total collected individuals. Three months after fishing, the majority of the population still consisted of small individuals (< 100 mm TL). © 2005, Copyright Taylor & Francis Group, LLC.