User:Jewellha/Aristostomias

Production of red light bioluminescence
Similar to other deep-sea organisms that are capable of producing red light bioluminescence, including Pachystomias, Aristostomias has large suborbital photophores that produce red-shifted cold light. In addition, Aristostomias has postorbital photophores that emit blue-green light.

Visual systems
Most meso- and bathypelagic fish are only able to see shortwave light, as their retinae possess rods with rhodopsins sensitive to blue light. Aristostomias is able to detect red-shifted light, as their retinae have long-wave absorbing rhodopsins and porphyropsins that can detect wavelengths of up to 590 nm. Aristostomias can detect red light at distances of up to 2 meters, suggesting that detection is used primarily for close-range intraspecific communication and short-range prey detection.