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. 2008 Sep 16;8:16. doi: 10.1186/1472-6785-8-16

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Copyright © 2008 Michiels et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Spectrometric measurements confirm the emission of red light, and the ability to see it. a. Fluorescence emission spectra of five genera of Gobiidae (top), one genus of Syngnathidae, Labridae and Blenniidae each (middle) and three species of Tripterygiidae (bottom). b. Absorptance spectra of photoreceptor visual pigments found in Eviota pellucida with wavelengths of maximum absorptance (λmax) at 497 (rods), 458 (SWS single cones), 528 (MWS, twin cones) and 540 nm (LWS, twin cones). The fluorescence emission spectrum of E. pellucida is included for comparison (dashed line).