Microalge and macroalgae are also used as components in polyculture systems and in remediation; although these topic are not covered in this paper,information on bioremediation is contained in many publications, including Msuya and Neori and green seaweed (Ulva spp.) have been found to suitable species for bioremediation. The use of algae in integrated aquaculture has also been recently reviewed by Turan (2009)