鱼类

Coilia ectenes belongs to Clupeiformes 、 Engraulidae 、 Coilia Gray, an important economic anadromous fish, which has large distribution in the middle and lower reaches of the Changjiang River or inshore land, a lagre proportion in local total yield.

鲚属鱼类隶属于鲱形目（Clupeiformes）、鯷科（Engraulidae），是江海洄游性鱼类，也是长江中下游及沿海一带重要的经济鱼类之一，占当地渔业总产量的比例甚大。

The egrets and herons fed mainly on fish, which accounted for 100% of the diet of little egret chicks, and for 95% of the diet of night heron chicks. Night heron chicks also received small amounts of frogs, crustaceans and small sized mammals.

鹭群主要的食物类型是鱼类，白鹭食物几乎全为鱼类，夜鹭95%的食物为鱼类，兼有少量的蛙类、甲壳类和小型哺乳类动物。

Feeding habits of fish may affect the content of indicative PCBs in fish, the level of indicative PCBs in carnivorous fish higher than herbivorous fish.

鱼类的食性可能会影响指示性PCBs在鱼体内的含量，肉食性鱼类指示性PCBs的含量远高于草食性鱼类。