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Figure 3


Fig. 3. Mean flicker fusion frequency (FFF) values for five sciaenid fishes. Open symbols are results of day experiments, filled symbols are results of night experiments. Error bars indicate ±1 s.e.m. Triangles are the FFF at maximum stimulus intensity (Imax); circles are FFF at I25 (light levels 25% of Imax). We considered I25 to be a proxy for ambient environmental light intensity.