Fig. 1. Normalized average absorbance spectra of the range of visual pigments found in aquarium-reared black bream at two different developmental stages. (A) Cones, 5-40 dph. The short wavelength visual pigment has a _max at 425 nm (filled squares; N=5); maximum transverse absorbance (optical density, OD) =0.0148. The long wavelength pigment has a _max at 533 nm (open squares; N=65, OD=0.0178). (B) Cones, 160-172 dph. The short wavelength visual pigment now has a _max at 475 nm (filled squares; N=5, OD=0.0178) and the long wavelength pigment has a _max at 558 nm (open squares; N=13, OD=0.0188). (C) Rods, from 25-172 dph. The curve has a _max at 508 nm (N=34, OD=0.0267). All curves are fitted with an A₁ visual pigment template (solid line), calculated using the equations of Govardovskii et al. (2000).

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