海洋生态系统行为：泰国珊瑚礁上的鹦嘴鱼群落觅食

l of Redlip Parrotfish (Scarus rubroviolaceus) reef grazing shows near total female dominance, with one bright blue terminal phase male patrolling among reddish brown initial phase females. This harem structure is typical of the species, in which a dominant male defends a large feeding territory. Nearby, opportunistic sergeant major fish (Abudefduf saxatilis) scavenge on coral fragments broken loose by bioerosion. 4K, wide angle, horizontal medium shot, scuba diver POV. Andaman Sea, Krabi Province, Thailand.