Unusual Fish Assemblages Associated with Environmental Changes in the East China Sea in February and March 2017

Two large fish assemblages were recorded in the overwintering fishing grounds of East China Sea February and March 2017. In this study, available time series satellite-derived sea surface temperature, wind, chlorophyll a, reanalysis data used to explore relationships between observed aggregations environmental factors. The bottom waters abnormally warm winter 2017, then experienced significant cooling due eastward movement Yellow Cold Current, which was driven by increased northwesterly wind from January mid-March Fishing areas affected region, including No. 1891, warm, 1592, had a strong thermal front high concentration, might have provided suitable environments for warm-temperature fish, resulting assemblages. abnormal temperature changes early spring 2017 may been associated with local ocean circulation.