This small-scale aquaculture helps to increase the diversity of food production in Tanzania and to reduce the risk of poverty (Mulokozi et al 2020). Nile tilapia (Oreochromis niloticus) is the most commonly cultured fish species in Tanzania (Chenyambuga et al 2014; Kaliba et al 2006; Mmanda et al 2020). The popularity of Nile tilapia is due to