Abstract: Nile tilapia (Oreochromis niloticus) can cause a series of economic problems in aquaculture ponds due to its competition with other species and negative impacts on their growth and breeding. To test the killing effect of “Miefeiling” on O. niloticus and to provide scientific guide for its application, we conducted an experiment by applying 0.16 mg·L^-1“Miefeiling” twice to control Nile tilapia in a big ornamental aquaculture pond. We found that the application of 0.16 mg·L^-1“Miefeiling” had significant effects on the removal of Nile tilapia, with a removal rate of >99% but without any side effects on the breeding species. Our results give first evidence that “Miefeiling” can effectively remove the Nile tilapia in the pond and thus provide new insight to control tilapia species in ornamental aquaculture and to manage invasive fish species in the field.

Key words: stem configuration, leaf biomass, twig biomass, canopy, allometry