浮游动物是鳙鱼的主要饵料，也是很多鱼类幼鱼和鱼种阶段的重要食料，湖泊中浮游动物数量和生物量的大小可直接影响到鱼产量的丰歉。尤其是与鳙鱼产量的关系更为密切。1991年6月－1995年4月在老江河四大家鱼种质资源天然生态库建库期间，我们对其浮游动物进行了采样观察，旨在 Zooplankton is the main diet of anchovy, and it is also an important foodstuff for many fish juveniles and fingerlings. The quantity and biomass of zooplankton in the lake can directly affect the fish production. Especially with the production of anchovy more closely. From June 1991 to April 1995, we sampled the zooplankton during the establishment of the natural ecological library of the four big fish homeland resources of the Laojiang River, aiming at