“…Nevertheless, some successful commercial farms are currently operational outside of Europe, and the results obtained in the present study confirm the adaptability of trout to aquaponic conditions, even when a low level of technology (basic system components, no environmental control, no water sanitation) is adopted (Birolo et al, 2020). Indeed, we recorded a notably low fish mortality (2.9% on average) during the course of trial, which is consistent with the findings of previous studies that have examined the performance of European carp (Cyprinus carpio; Maucieri et al, 2019), rainbow trout (Birolo et al, 2020), and largemouth bass (Micropterus salmoides; Bordignon et al, 2020) using the same type of system. This is in spite of the fact that on some warm days during the trial, water temperatures reached peaks higher than the temperature considered optimal for rainbow trout (<20 • C; Ineno et al, 2005;Chen et al, 2015), although it remained lower than the limit of thermal tolerance for this species (24 • C; Bear et al, 2007).…”