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Red Irish Lord, Hemilepidotus hemilepidotus. The cornea of these fish is filled with chromatophores, which change colour. By breaking up the outline of the obvious eye shape, it makes them stand out less to potential predators, or they prey they are seeking.
Photo ID: red-irish-lord-hemilepidotus-hemilepidotus-09
© Eiko Jones 2020
Photo size: 36.2 Mpixels (103 MB uncompressed) - 7360x4912 pixels (24.5x16.4 in / 62.3x41.6 cm at 300 ppi)