Bottom trawl fisheries are one of the important inshore fisheries in
Taiwan, but its landing is decreasing and demersal fish resources are
exhausted from1980. So, to improve definitely the fishing condition for
trawl fishery, it is necessary to investigate comprehensively the recent
situation of trawl fishery.
This studies in view of investigate the biological ecology, spawning
period, distributions of larva and fishing ground of the main economic
fishes in the southwestern waters of Taiwan, and to determine accurately
the geographical position of spawning ground by the scientific method,
join application of sounding technology at the same time; use to compare
trawl net and scientific fish detection with the result of survey
synchronously. and then it will be a reference basis in future for the
fishery resources estimate, conservation, management and fisheries
administration decision-making.