Fig. 3. Cardiac outputs of 6-, 10- and 15°C-acclimated common carp to severe prolonged hypoxia expressed as a function of water oxygen concentration. (A) Acute response with values presented to one value after the end of the acute phase. (B) Prolonged response presented to minimum hypoxic Q values. (C) Development of the third phase from minimum hypoxic Q. Values in A and C are means ± S.E.M (N=3–8 (6°C), 12–15 (10°C) and 8 (15°C); values in B are from individual fish.