Her work on the brown trout (Salmo trutta) after World War II "effectively established the discipline of ecophysiology.
"[1] Her father serving in the Indian Civil Service, Brown was born in Mussorie, India on 28 September 1918.
[2][1] During World War II, Brown was a lecturer at Girton in between stints of farmwork as a land girl.
She continued to teach at Girton and the University of Cambridge until 1950 when she was a visiting scientist at the East African Fisheries Research Organization in Jinja, Uganda for a year.
Upon her return home, Brown became a lecturer in zoology at King's College, London until her marriage in 1955.