Since 2009 (EC 710/2009) organic fish production has been fully legalized in Europe. The Demeter standard accepts these regulations as a basis and gives specific notes and supplementary provisions where there is need from the perspective of Biodynamic production. Regulations cover the production of fish in freshwater, especially of salmonids in the trout pond management system and production of various species including predatory species in the carp pond farming system. It is the responsibility of the operating team to gain competence in fish culture in general before considering Demeter certification. The aim is to create a unified Biodynamic system of aquaculture and agriculture.