capable of capable_of photophore Organ that produces bioluminescence or "living light." Photophores are often complex with various color filters, reflectors, light guides, lenses and chromatophores surrounding the site of light production, the photogenic region. The name of specific photophores often reflects their position on the animal. For example, the branchial photophore is at the base of the gill, the anal photophore lies at the side of the anus. light organ bioluminescence organ