Abstract
The routine rate of O2 uptake, of 12 groups of zebrafish aged 0 to 100 days, was measured in well-aerated water free of zinc. The relationship between the rate of O2 uptake (X) and survival time (T) in 4 toxic solutions of zinc was (T-Ts) (X-Xs) = K throughout the life cycle, where Ts, Xs, and K were constants. T was also related to the dry weight of the fish (W) in fish aged 5 days or over: (4720 W-14 - 1500) (T -1.3) = K.