礁石生物多样性：泰国珊瑚礁上方成群的炮弹鱼和圆雀鯛

school of redtoothed triggerfish (Odonus niger) and threespot dascyllus (Dascyllus trimaculatus) moves above a Porites coral reef in the Andaman Sea, bodies flashing iridescent blue violet in open water. Despite the name, the red teeth that give the redtoothed triggerfish its common name are rarely visible, tucked inside a mouth built for picking zooplankton rather than biting coral. The dascyllus, marked by three pale spots, shelters at the group's edge. 4K, wide angle, horizontal medium shot, scuba diver POV. Andaman Sea, Krabi Province, Thailand.