还是盘中餐 --- 练习

shanyue

图2就是吴郭鱼不好吃。
傻瓜满多 发表于 2010-1-26 15:09

  找到了，是这样的：
  

Scientific name - Bidyanus bidyanus
Distribution - Silver perch were once widespread and abundant throughout most of the Murray-Darling river system. They have now declined to low numbers or disappeared from most of their former range. Only one remaining secure and self sustaining population occurs in NSW in the central Murray River downstream of Yarrawonga weir, aswell as several anabranches and tributaries.
Size - Silver perch usually reach 30-40 cm and 0.5-1.5 kg, but have been recorded up to 8 kg.
Characteristics - Silver perch are a moderate to large freshwater fish native to the Murray-Darling river system. Silver perch are oval shaped with a small head that can become beak-like in larger fish. The colour can be grey, greenish, gold or silvery, darker on the back and paler on the sides, with a white belly. Juveniles may be mottled with vertical dark bars.
Confusing Species - Silver perch closely resemble two other terapontid species found in adjoining drainage's of the Murray-Darling system. These are the Welch's grunter (Bidyanus welchi) and the Barcoo grunter (Scortum barcoo).
Fishing rules – A Ministerial Order is in place to allow recreational fishing for silver perch. Silver perch may be taken from listed stocked dams but are not allowed to be taken in rivers. The bag limit in listed stocked impoundments is 5 per person per day, with a minimum size of 25cm.