trash fish meaning in English

废鱼
杂鱼；下脚鱼

Continuous effort is being made in promoting the use of pellet feed to replace trash fish , traditional feed for aquaculture
渔护署亦继续致力推广使用颗粒鱼粮，以取代水产养殖业传统所用的杂鱼。
Improved culture techniques and good management practices are also extended to fish farmers through seminars , on - farm demonstrations as well as advisory leaflets and guidelines . traditionally , marine cultured fish are fed with trash fish
此外，该署又举行座谈会、实地示范和发出单张、指引，向养鱼户推介经改良的养殖技术和良好管理方法。
Marine ecosystem structure has also been changed and the fishery has shifted from catching large predatory fishes to small trash fishes and invertebrates , which are resistant to heavy fishing cheung 2001
另一方面，海洋生态系统结构亦已改变，渔获亦从大型的捕食性鱼类，转变为那些较能抵抗密集捕鱼体型细小无经济效益的杂鱼类及无脊椎生物cheung 2001