Fig. 2. (A) Relationship between maximal undulatory swimming speed and water temperature. (B) Relationship between caudal fin beat frequency at maximal undulatory swimming speed and water temperature. Filled symbols, air-saturated water; open symbol elevated oxygen concentration at 30°C. Data are shown as mean ± s.e.m. (N=6, air saturated oxygen concentrations; N=5, elevated oxygen concentration 30°C). Numbers beside symbols denote homogenous subsets as established by Scheffé post-hoc analyses (P>0.05).