Growth estimates of weight specific growth rate (SGR) in % per day (mean ± SD) of Nile tilapia (see Fig 2) and wild Northeast Arctic cod in three different areas of the Barents Sea (see Figs 3 and 4) using different trained models from each dataset and combinations of different datasets with three inputs of normalized weight, normalized activity ratio of trypsin to chymotrypsin (T/C ratio), and normalized condition factor (CF).

The values in parentheses are mean squared error (MSE) calculated from the real and estimated SGR values. The network time scale λ = 1.0 for all models (see Table 1).