The spatial-temporal distribution of fish schools using echo-sounder in the marine ranching area of Yeosu

Abstract

This study aims at assessment of the dominant fish species, and spatio-temporal of fish schools using acoustic and catch data around the marine ranching area (MRA) of Yeosu in August 2013.BR A acoustic data was collected using a 200 ㎑ dual beam transducer, and catch data was analyzed through set net, bottom gill net, and trap.BR The surface temperature and salinity were 21.6~25.2℃ and 31.2~32.6 ppt, respectively in survey area. The fish schools are higher distributed coast than open sea and are demonstrated a high around artificial reefs. The dominant fish species were Scomberomorus niphonius, Trichiurus lepturus, Scomber japonicus, Chelidonichthys spinosus, and Parapercis sexfasciata.