环尾天竺鲷的生物学特性及家用水族箱饲养技术

介绍了环尾天竺鲷的形态、繁殖习性、水族箱设置、鱼的选择、水质指标控制、饲料投喂以及病害防治等,为观赏鱼爱好者饲养环尾天竺鲷提供技术参考.     

生物转筒在高密度养鱼系统中应用效果的研究

For the purpose of improving water quality, biorotator is loaded with plenty of perforated plastie balls of which inner and outer appearances can adhere with biomenbrane, thus ‘having area increased about one time as with the same makes without the balls and water purifying rate over 80% while compared with the same sized biorotating disk. A long-term experiment has shown that the biorotator is well adaptable for fish farming, resulting in high yield per unit water area and low feed coefficient. Additionally, by means of biorotator the economic efficieney is 2.5-3 times higher than that without bloratator.