Fig. 2

Length-weight data with the best-fit models (solid lines), 95% confidence bands (red dashed lines) and 95% prediction bands in the blue zones for Sarotherodon melanotheron from Nakwa (a) and Brenu (b) lagoons of Ghana. The predictions were made using the length-weight models (Table 1) derived from the fish samples. The models can be used to predict the weight of Sarotherodon melanotheron samples for which only standard lengths are measured. Values of the response variable (i.e. Weight) were predicted from the fitted model using predict function of the R package ‘FSA’