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

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