Rosemary Helen Lowe-McConnell (née Rosemary Helen Lowe; 24 June 1921 – 22 December 2014)[1] was an English ichthyologist, ecologist, and limnologist known for research on tilapia and aquaculture. Working in the tropical waters of Africa and South America, Lowe-McConnell was a pioneer in the study of tropical fish ecology and an early adopter of the use of scuba diving for scientific research.[2]