Drawing on marine research technology, she aims to decode the biological signals of fish, a simple yet decisive idea for an industry striving for sustainable efficiency.

Sarah Carroll is a South African scientist and entrepreneur. She is the co-founder and chief executive of MariHealth Solutions, a deep-tech company specialising in aquaculture health and nutrition. Her aim is to improve how fish farms and feed manufacturers monitor operations and enhance performance.

Founded in 2021, MariHealth Solutions seeks to deepen understanding of fish physiology under different environmental, pathogenic and dietary conditions. The company acts as a decision-support partner, converting complex biological data into practical recommendations for aquaculture professionals.

Its technologies monitor fish health and welfare, analyse disease mechanisms and evaluate vaccine efficacy. They also measure the real-world impact of novel ingredients, new feed formulations, and varying farming practices and environmental conditions on animal physiology.

Carroll holds a bachelor’s degree in zoology from Rhodes University (2013). She earned a master’s degree in marine biotechnology in 2016 and a PhD in biochemistry and molecular biology in 2020, both from the University of Cape Town. She worked there as an associate researcher from 2020 to 2022.

Melchior Koba