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(一)甲虫种类较多,常在水边泥土内筑巢栖息,白天隐居于巢内,夜晚或黄昏时出来活动觅食,捕食大量鱼苗。防治方法:每立方米水体用90%晶体敌百虫0.5克溶解后兑水全池泼洒。
(A) more beetles, often nest in the water near the soil habitat, nest in the nest during the day, out activities at night or evening foraging, preying on a large number of fry. Prevention and treatment methods: 90 cubic meters of water per cubic meter of water trichlorfon dissolved 0.5 grams after watered Quanchiposa.