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Fig. 2. (A) Reaction distance at irradiances of 0.5 µmol m-2
s-1 (open symbols) and 0.015 µmol m-2 s-1
(closed symbols). Values are means ± s.d. Downward pointing arrows
indicate the
max of the three cone pigments; upward
pointing arrow, that of the rods. (B) Optomotor responses. The maximum
responses of the fish are indicated by filled symbols and the average
responses by open symbols. Values are means ± s.d. Downward pointing
arrows indicate the
max of the three cone pigments.