Integrated multi-trophic aquaculture (IMTA) involves cultivating fed species with extractive species that utilise waste from aquaculture for their growth. All components have commercial value, as well as roles in biomitigating. The IMTA concept should also be understood within an integrated land/coastal aquaculture ecosystem approach.
These systems not only produce valuable biomass, but it also provides waste reduction services. With an appropriate composition of co-cultured species, IMTA can reduce the amounts of organic and inorganic nitrogen, carbon and phosphorus, making extractive aquaculture a good candidate for nutrient trading credits (NTCs).
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