💡  A rapidly changing climate in open-loop aquaculture systems is leading to increased aquatic mortalities and lower productivity. Although rainbow trout is one of the major freshwater fish cultured globally, it is commercially under-developed in aquaponics.

📌 Research Highlights:
▶ Rainbow trout are usually reared in concrete flow-through systems where contaminated water is combined with a larger water supply. Some European and Asian countries have passed legislation minimizing waste expulsion into water reservoirs.
▶ 70% of rainbow trout are farmed in flow-through raceways situated within mountain streams; 10% is farmed in a recirculating aquaculture system (RAS).
▶ Globally, rainbow trout possess one of the highest market values. However, climate change is degrading the growing conditions for rainbow trout and there is a considerable decline in production in its highest-demanded countries.

🎯 Due to specific requirements for rainbow trout to thrive, the species is less often utilized in aquaponics. However, rainbow trout are increasing in demand worldwide while accessibility and practicality of flow-through systems dwindles, suggesting significant advantages to the species’ economic demand. Consumer preference should not be ignored, and with a high protein content and favorable nutritional value, research indicates a promising partnership on the nearing horizon between rainbow trout and aquaponics.

Photo Courtesy: Aquaponics as a Promising Strategy to Mitigate Impacts of Climate Change on Rainbow Trout Culture by Christos Vasdravanidis


📷 Image: Requirements of rainbow trout in aquaculture.

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