. However, as it is a relatively emerging practice there is still little knowledge
on the long-term effects of plant extracts on fish physiology as well as a lack of homogenization in the extract
preparation and fish administration of the plant extracts. This article aims to review the studies carried out on
the use of plant products on fish aquaculture and their biological effects on fish such as growth promoter,
immunostimulant, antibacterial and anti-parasitic. It also intends to evaluate the current state of the art, the
methods used and the problems encountered in their application to the aquaculture industry.