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Fig. 1. Relationship between caudal fin beat frequency and swimming speed in
bluegill sunfish at a range of water temperatures. All data were collected in
air-saturated water except for the high O2 condition at 30°C
where oxygen levels were elevated to 12 mg l–1, using 100%
oxygen. Data are shown as mean ± s.e.m. (N=6, air saturated
oxygen concentrations; N=5, elevated oxygen concentration
30°C).