[3] She went from there to the Freshwater Biological Association, Far Sawrey working on various projects aimed at producing wartime food from fresh waters.

As a result of these studies, Lowe-McConnell produced a valuable account of the tilapia fishery that formed a basis for subsequent investigation into Malawian cichlids.

In the survey, Lowe-McConnell identified five tilapiine species, as well as studied other economically viable fish, including Labeo mesops.

[2] After she married the geologist Richard McConnell on December 31, 1953, she was required to resign from the British Colonial Service due to the organization's marriage bar.

[5] Her 1959 paper on the differences between tilapia species served as the basis for Ethelwynn Trewavas' division of tilapiine fish genera.

[2] When Richard retired in 1962, the McConnells moved back to England, where Lowe-McConnell joined the Natural History Museum, London as an Associate.

[2] She traveled to Gatun Lake in Panamá in 1979 to assist Thomas Zaret in studying the impact of an introduced cichla species.