Longfin Bannerfish close up at Koh Tao, Thailand

longfin bannerfish bannerfish butterflyfish pennant coralfish chaetodontidae scuba fish longfin reef scuba diving diving heniochus acuminatus aquarium aquatic underwater saltwater sea acuminatus swimming animal wildlife seawater environment heniochus ocean macro coral beauty background beautiful long color yellow marine exotic white water natural wild nature black blue colorful isolated school tropical life red coachman