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The investigation of fish resources and fish samples collecting were carried on in the
Darting River in October 2008,May and October 2009.There are 1 3 sampling points and
3 catch statistics sites were setted,the laboratory datas of fish resources on the Daning
River from 2005.2007 were alSO surnmarized,and the present situation of the fish on the
Daning River were analyzed.
There were 99 kinds of fishes in the Darting river,and t11ey belonges 8 orders 1 6
families,7 1 genera.Among these fish,Cypriniformes which contains 76 species Was the
most dominant order,accounting for 76.8%of the total species in Darting river;followed
by catfish,which contains 1 1 species accounted for 1 1.1%;then,the third Was
Perciformes which contains 6 and accounted for 6.1%:the other 5 orders accounted for 6.1%.
The catches in May were 22 species inWushan,25 species in Dachang,25 species in
Wuxi,and Wushan and Dachang had the higher similarity index.The yield of fish were
Dachang Section>Wushan River>Wuxi River.The catches in October fish were 20
species in Wushan,1 8‘species in Dachang,1 6 species in Wuxi.Wushan and Dachang had
the higher similarity index,and the yield were Dachang>Wushan>Wuxi.There were 52
species belonging to 4 orders,1 0 families and 45 genera in May in total,while only 3 8
kinds in October.Not only the species number,but also the total yiled weight,in May
Was bigger than that in October.The similarity of May and October is 0.25.
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