Waters from aquaculture discharged directly into rivers and streams without previous treatment negative impact
on the environment. From the ecological viewpoint, the impact and local changes caused by aquaculture may be minimized if adequate management is used. Constructed wetlands have been widely used as a means of removing nutrients and suspended solids from wastewaters, and it has been shown that they can be used to treat aquaculture effluents (Schwartz and Boyd 1995). The constructed wetland (CW) systems utilize natural processes in treatment, such as sediment and microbial activity, to remove pollutants such as nutrients, organic matter, and heavy metals (Kadlec and Wallace 2009).