Model selection results for the body mass model (i.e. excluding species SMR differences) and the metabolic model (i.e. incorporating species SMR differences) evaluating the metabolic controls on mudfish and kōkopu population biomass density.

R2 is the coefficient of determination, AICc is Akaike's information criterion corrected for small sample size and w is the Akaike weight for the models that were simplified (i.e. all non significant terms removed) from their corresponding full model. Log(μMASS) and log(μSMR) are the average mass and standard metabolic rates of individual fish in a population in g and mg O2 g-1 h-1, respectively. Species identity is a two-level factor (banded kōkopu or brown mudfish). A ‘×’ denotes an interaction between a factor and all subsequent variables in brackets.