Smart Net-Zero

October 09, 2023 | Earth.org  | 

Fish farms, responsible for over half of the fish in the market, face challenges such as high feed costs, pollution, invasive species, and water resource use. To address these concerns, fish farmers are exploring sustainable alternatives, with microalgae emerging as a promising option. While current fish feeds rely on wild fish or terrestrial agriculture, microalgae offer a more ecologically friendly solution. These single-celled organisms can provide superior nutritional profiles and are easily cultivated. Challenges include the expensive extraction process, but  the potential benefits, such as improved weight gain, antioxidant properties, and enhanced immune health in farmed fish, make microalgae-derived feeds appealing. Additionally, microalgae's flexible water requirements and the ability to cultivate them in wastewater or seawater contribute to their sustainability. Despite challenges in harvesting and processing, ongoing research and development efforts aim to establish a more cost-effective and efficient microalgae-based fish farming industry.