fish closeup with a gray or grey and silver shiny skin scales

animal body part markings scale skin extreme closeup gray color macrophotography silver colored slice food arapaima cycloid depth field fish background pattern texture fishscales irridiscent macro view pirarucu salmon seafood shiny skinned threaded close up apnea aqurium asp aspius brook trout carassius caudal crucian ichthyology image focus technique lateral ocean life scaly serving size siamese fighting