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Seaweed Surgeon - Surgical Fish. Body up to 50 cm in length. Widespread in the Indian-Pacific tropical climate.
Close-up of Sailfin tang on the coral reef.
Tropical sea underwater fishes on coral reef. Vibrant striped fish swimming amidst a colorful coral reef ecosystem.
Tropical fish swimming through the open water over coral reef
Symphysodon discus in an aquarium on a green background
Dendrochirus barberi, Hawaiian green lionfish, Maui Island,
Ribboned Sweetlips Plectorhinchus polytaenia occurs in the tropical Indo-West Pacific from West Coast India to Australia in a depth range from 5-40m on coastal and seaward reefs, max. length 50cm. The species is found singly, in small groups under ledges or large resting aggregations by day, foraging for small invertebrates at night. Adults are found on deep, current-prone slopes with rich invertebrate growth; juveniles on sheltered reefs nearby. \nBluestreak Cleaner Wrasses Labroides dimidiatus usually occur in pairs in the tropical Indo-Pacific in a depth range from 1-40m, usually 1-30m, max. length 14cm. The species creates 'cleaning stations' to which fishes come to have crustacean ectoparasites and mucus removed. Cleaning intensity is not related to client size or commonness. Even hands of divers will be cleaned if presented to the cleaning station! \nThis specimen was encountered in the Triton Bay, Kaimana Regency, West Papua Province, Indonesia, 3°54'50.604 S 134°6'0.828 E at 15m depth.
Humphead wrasse (Cheilinus undulatus), also known as the Napoleon fish.
Tropical coral fish
Colorful Coral Reef Teeming with Exotic Fish. Lively and colorful coral reef in a vibrant underwater world. Diverse array of tropical fish swimming freely in their aquatic environment, creating a mesmerizing scene for nature and animal enthusiasts alike.
Queen angelfish (Holacanthus ciliaris), also known as the blue angelfish, golden angelfish or yellow angelfish underwater in sea with corals in background
Blue perch in baltic sea resting on reef
Hoeven's Wrasse (Halichoeres melanurus)
Leafy Seadragon, Phycodurus eques, from  Western Australia.
The emperor angelfish omacanthus imperator is a species of marine angelfish. It is a reef-associated fish. generally associated with stable populations and faces no major threats of extinction
Diamond Watchman Goby
The Badlands in Winter
Mandarin fishes inhabit shallow protected lagoons and inshore reefs. They occur in the Western Pacific from Ryukyu Islands to Australia, usually in small groups spread over small area in a depth range from 1-18m, max. length 7cm. \nMandarinfish do not have scales, but a mucus layer for protection. It is not only a stinky slime they produce, but they also secrete a toxin to protect them against predators. Their dramatic colouration, known as aposematism, is a warning: unpalatability and toxicity - both prey and predator get to live longer. \nThe couples perform an extraordinary courtship dance at dusk. Females gather at the reef, judging if a male is worthy. A male who has successfully courted a lady attaches to her at the pelvic fin. Then the pair swim up from the reef towards the waters surface, releasing a cloud of sperm and around 200 eggs smaller than 1mm. \nThis specimen is a male: The presence of an elongated spine at the front of the first dorsal fin of males is distinctive. Females will not have this spike and will have a rounded first dorsal fin instead. In this case, there was a female too, but she didn't make it into the photo.\nBanda Neira Island, Indonesia, \n4°30'40.842 S 129°53'19.71 E at 1.5m depth
Aulonocara cichlid red-shouldered peacock. Aulonocara Hansbaenschi.
Large tropical fish swimming through the open ocean
coral fish swimming
Coris gaimard, Yellowtail wrasse or African coris.  Maui Island, Hawaii.
Crete island in Greece is a beautiful summer destination - Crete island, Greece, 07-21-2016
Closeup of a brightly colored Emperor angelfish (Pomacanthus imperator), Indian Ocean
Photo of Longspine emperor, a juvenile saltwater fish, against a black background.
Colorful sea cucumber-like corals.
Surgeonfish in an aquarium
Golden Damsel Amblyglyphidodon aureus occurs in the tropical Western Pacific from Andaman Sea and Christmas Island in the Eastern Indian Ocean to Fiji, north to the Ryukyu Islands, south to Rowly Shoals and New Caledonia in a depth range from 3-45m, max. length 13cm.\nJuveniles in small groups are often found among large sea fans. Adults occur in steep outer reef, occasionally in deep lagoons and along channel walls, usually in current prone habitats and where there are abundant gorgonian and long sea-whip corals on which they lay and guard eggs. The species feeds on zooplankton. \nMost of the time, a fish's behavior depends on its species. From time to time it is possible to meet exceptions, like this specimen, a very curious character, not shy at all, who came back looking at the camera many times.\nTriton Bay, West Papua Province, Indonesia, \n3°54'52.0617 S 134°7'21.3867 E at 9m depth
Blue banded surgeonfish (Acanthurus lineatus), also known as the zebra surgeonfish. Wild life animal.
Holacanthus clarionensis, also known as the clarion angelfish, is a species of marine angelfish of the family Pomacanthidae.   Baja  California. Mexico.
Free Images: "bestof:Chascanopsetta prorigera.jpg Chascanopsetta prorigera The deep-sea fishes of the Hawaiian Islands Gilbert Charles Henry 1859-1928; Jordan David Starr 1851-1931"
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