Investment Viability of Integrated Multitrophic Aquaculture (IMTA) in Nigeria
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Integrated multitrophic aquaculture (IMTA) is considered a more sustainable alternative to conventional monoculture systems, with the potential to improve profitability while reducing environmental impacts. However, IMTA adoption in Nigeria remains limited. As part of Asia–Africa BlueTech Superhighway (AABS), scientists at WorldFish evaluated the projected economic viability and environmental impacts of four cage-based IMTA systems in brackish water relative to a conventional tilapia monoculture. Across the IMTA systems assessed, the unit investment costs ranged from USD 97.76 to 307.49 per m³ (₦ 134,147.25 - 421,940.85 per m³). Returns per USD invested varied significantly, ranging from USD 1.98 to 3.21 (₦ 2716.98 - 4404.79) in IMTA systems, compared with USD 0.08 (₦ 109.78) in the conventional monoculture system. In addition, IMTA implementation reduced greenhouse gas (GHG) emissions by 59.7%–82.4% relative to the monoculture system.
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Aboah J, Okomoda V, Fasakin J and Magondu E. 2026. Investment Viability of Integrated Multitrophic Aquaculture (IMTA) in Nigeria. Penang, Malaysia: WorldFish. Insight Brief: 2026-15.
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Joshua Aboah https://orcid.org/0000-0003-1000-2109
Victor Tosin Okomoda https://orcid.org/0000-0002-6911-583X
Idowu James Fasakin https://orcid.org/0000-0002-9122-7176
Victor Tosin Okomoda https://orcid.org/0000-0002-6911-583X
Idowu James Fasakin https://orcid.org/0000-0002-9122-7176
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WorldFish (WorldFish)
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