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８种拟除虫菊酯对稀有鲫的急性毒性和其中２种拟除虫菊酯的亚慢性毒性研究结果表明：溴氰菊酯、高效氯氰菊酯、氯氰菊酯、甲氰菊酯、氰戊菊酯、二氯炔戊菊酯、胺菊酯、甲醚菊酯对稀有鲫均属剧毒，它们的ρ（９６ｈＬＣ５０）／μｇ·Ｌ－１分别为３．１６，３．２４，６．３１，７．２１，７．３５，３２．４５，９１．７５和８８２．６；甲氰菊酯、二氯炔戊菊酯对稀有鲫７ｄ亚慢性毒性的最低有影响浓度ρ（ＬＯＥＣ）和最高无影响浓度ρ（ＮＯＥＣ）分别为０．８８～０．４４μｇ／Ｌ，４．０～２．０μｇ／Ｌ，以ρ（９６ｈＬＣ５０）／μｇ·Ｌ－１为基准，２种拟除虫菊酯的安全系数均为０．０６～０．１２５．
The acute toxicity of 8 kinds of pyrethroids to the rare crucian carp and the subchronic toxicity of 2 pyrethroids showed that deltamethrin, beta-cypermethrin, cypermethrin, fenpropathrin, fenvalerate, Fenvalerate, tetramethrin, and metthrin were all virulent to the rare crucian carp, and their ρ (96hLC50) / μg · L-1 were 3.16, 3.24, 6.31 and 7.21 , 7.35, 32.45, 91.75 and 882.6 respectively. The lowest concentration of fenpropathrin and 2-chloroacetophenone on the sub-chronic toxicities of Carassius auratus Carassius auratus, ρ (LOEC) and the highest non-affecting concentration ρ (NOEC) were 0.88-0.44μg / L and 4.0-2.0μg / L, respectively. The safety coefficients of both pyrethroid were (96hLC50) / μg · L-1 0.06 ~ 0.125.