The Early Development of Coreius heterodon and Coreius guichenoti Yu Zhitang,Liang Zhixin and Yi Bolu The Reproductive Habit and Embryonic Development of Elopichthys bambusa in Changjiang(Yangtze River) Liang Zhixin,Yi Bolu and Yu Zhitang Population Dynamics and Production of Daphnia hyalina and Daphnia carinata ssp.in Donghu Lake,Wuhan Huang Xiangfei and Hu Chunying Effect of Temperature on Development and Reproduction of Cyclops vicinus vicinus Uljanin from Lake Donghu,Wuhan Chen Xuemei Isolation of Phycobilisomes of Anabaena variabilis and Fluorescence Identification of their Intactness and Dissociation Lu Rongzhao and Yu Yanli Effects of Copper,Mercury,Cadmium,BHC and Parathion on Growth of Mosquito Fish(Gambusia affinis) Zhou Yongxin and Tang Huiyuan Physiology of Heterotrophic Growth of Blue-green Alga Anabaena azollae Jin Chuanyin Toxicity of Mercuric Chloride to Daphnia magna Straus,with Special Emphasis on Long-term Tests Zhuang Dehui,Liang Yanling and Deng Guanqiang The Biological Aspects of Pond Smelt(Hypomesus olidus(Pallas))in the Shui Feng Reservoir Xie Yuhao and Pu Xiaoping