Will 2002 crop and crop photograph was compared 1997, crop reduces have eel only, reduced 3361 tons, accumulative total falls it is triangular bream of the Yong having silver crap with 2.01%;

• 将2002年产量与1997年产量相比；产量降低的只有鳗鱼；降低了3361吨；累计降幅为2.；01%25;