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鱼类的规格分选与起捕销售是网箱养殖生产中的重要环节。以往的手工操作不仅费时、费力,且由于鱼类转移速度缓慢以及操作过程中对鱼体的损伤和对鱼群的惊吓等,还会带来较高的死亡率。随着我国大型抗风浪深水网箱养殖的发展,这一问题日显突出。本文介绍了国外典型深水网箱的鱼类分级与起捕方法,并对作者自行研制的柔性格栅式分级装置和真空活鱼起捕机的设计原理和主要试验结果作了报道。
Fish sorting and catching sales is an important part of cage culture production. Previous manual operations were not only time-consuming and labor-intensive but also resulted in higher mortality rates due to the slow transfer of fish and the damage to the fish during operation and the shock to the fish stocks. With the development of China’s large-scale wind-resistant deep-water cage culture, this issue has become increasingly prominent. This paper introduces the classification and catching methods of fish in typical deep-water cages in foreign countries and reports the design principles and main test results of the flexible grill-type grading device and vacuum live-fish catching machine developed by the author.