Longfin Bannerfish, Heniochus acuminatus, Siaes Tunnel, Micronesia, Palau

reef reefs coralreef coralreefs coral reef bannerfish bannerfishes heniochus butterflyfish butterflyfishes chaetodontidae perciformes chordata coralfish coralfishes coralfish underwater marine wildlife marine fauna nature aquatic sea ocean underwaterphoto underwaterpicture underwaterphotography underwaterworld sealife carolines islands carolines pacific oceania oceanica longfin bannerfish heniochus acuminatus siaes tunnel micronesia palau horizontal format