Fig. 6: Comparison between the estimates of our model and those of the model used by Wilson et al.8.

Estimates of our model are average predictions (and thus do not account for the effect of family) at different levels of caudal fin aspect ratio (AR) and relative intestinal length (RIL). Estimates of “Wilson’s model” are presented at two levels of the constant ρ (ρ = 1 corresponds to benthic, sedentary fishes, whereas ρ = 2.4 is the value used to adjust model estimates for pelagic fishes with faster resting metabolic rates), while the constant α was set to 1 to be comparable to our estimates (see Wilson et al.8 for further details). All estimates are presented for a fixed temperature of 25 °C as results are unchanged at different temperatures (see Supplementary Fig. 6). Data underlying the figures are available in the Zenodo repository (https://doi.org/10.5281/zenodo.7530455)93.