A deep-sea fish called green eye exhibits a beautiful iridescent pattern around its large eyes and head.
Green eye fish are deep-sea aulopiform marine fishes in the small family Chlorophthalmidae.
These named after their disproportionately large, iridescent (as well as fluorescent) eyes, greeneyes are slender fish with slightly compressed bodies.
Although the largest species, the Short nose green eye, reaches a length of 40 cm (16 in), but most other species are much smaller.
Also their heads are small with large jaws. Their coloration ranges from a yellowish to blackish brown, and some species have cryptic blotches.
Like many aulopiform fish, green eyes are hermaphroditic; this is thought to be a great advantage in deep-sea habitats, where the chances of running into a compatible mate are uncertain.
Also young and larval green eyes are pelagic rather than benthic, staying within the upper levels of the water column.
Hake are known predators of green eyes.
Their fins are simple and spineless; aside from their eyes, some species also have iridescent patches covering their heads.
Bioluminescent creatures emit and produce their own light, whereas fluorescence is the emission of light by a substance—
not always living—that has absorbed light or other radiation of a different wavelength.
Animals use bioluminescence for many reasons including communication, but fluorescent creatures depend on the light to determine when they “glow.”