>>13264771>>13264804llumination (as a use of bioluminescence, from Wikipedia)
While most marine bioluminescence is green to blue, some deep sea barbeled dragonfishes in the genera Aristostomias, Pachystomias and Malacosteus emit a red glow. This adaptation allows the fish to see red-pigmented prey, which are normally absent from the deep ocean environment where red light has been filtered out by the water column.[68]
The black dragonfish (also called the northern stoplight loosejaw) Malacosteus niger is probably the only fish to produce a red glow. Its eyes, however, are insensitive to this wavelength; it has an additional retinal pigment which fluoresces blue-green when illuminated. This alerts the fish to the presence of its prey.
>>13264779We didn’t evolve candles though.
