银鱼是名贵的小型经济鱼类,适合在较大水域生长,近几年北方的大中型水库养殖不少。它冬季产卵,适宜水温为0℃～8℃。其人工孵化技术如下:一、准备工作准备50毫升、200毫升量杯各2个,200毫升、500毫升量筒各3个,滴定管、吸球各5个,镊子、剪刀各5把,温度计2支,托盘4个,天平1台,孔雀石绿50克,盐20千 Silverfish is a precious small economic fish, suitable for growing in larger waters. In recent years, large and medium-sized reservoirs in the North have been farmed. It spawns in winter, suitable temperature is 0 ℃ ~ 8 ℃. The artificial hatching techniques are as follows: First, the preparation for preparation 50 ml, 200 ml measuring cup 2, 200 ml, 500 ml measuring cylinder 3, burette, suction ball 5, tweezers, scissors 5, thermometer 2, Tray 4, 1 balance, malachite green 50 grams, salt 20 thousand