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  • This is a humpbacked scorpionfish (Scorpaenopsis neglecta) sitting on a muddy bottom in shallow water, with a number of Japanese silver-biddy fishes (Gerres equulus) swimming past in the background.
    scorpaenopsis-neglecta-humpbacked-sc...tif
  • This is a purple-pink weedy scorpionfish (Rhinopias frondosa) sitting on the ocean floor. In the absence of artificial illumination from strobe lights, the fish blends-in perfectly with its surroundings.
    rhinopias-frondosa-weedy-scorpionfis...tif
  • This is a rarely sighted Marukawichthys ambulator, a species of bullhead sculpin that normally resides at depths of several hundred meters in the waters around Japan.
    marukawichthys-ambulator-deep-ocean-...tif
  • Yellow flasher scorpionfish (Scorpaenopsis macrochir) in the muck of Lembeh Strait, Indonesia
    yellow-flasher-scorpionfish-scorpaen...tif
  • Beautiful purple weedy scorpionfish (Rhinopias frondosa) in Ambon, Indonesia
    Rhinopias-frondosa-purple-weedy-scor...tif
  • This is a male fat greenling (Hexagrammos otakii) opening his mouth, which is a behavior that many fish exhibit. This individual was watching over several clutches of developing eggs, which were situated behind the fish and thus obscured from view in this image. The brilliant yellow-orange hue is indicative of breeding season. These fish are normally drab in color.
    hexagrammos-otakii-fat-greenling-pro...tif
  • These are eggs of a sculpin named <br />
Bero elegans, found in the northwest Pacific. The eggs of this species have a blue tint and measure about 2mm to 3mm in size. Photographed at a magnification of two times life-size.
    bero-elegans-sculpin-eggs-japan-2019...tif
  • Hasegawa-san with freshly caught deep sea rockfish (Sebastes matsubarai)
    hasegawa-san-deep-sea-rockcod-japan-...tif
  • This is a small species of snailfish (Liparis punctulatus) that is found only in Japan. It lives among the folds of wakame seaweed stems known as mekabu (Undaria pinnatifida) and comes in an assortment of patterns and colors. This striped fish was about 1.5 centimeters in length.
    liparis-punctulatus-snailfish-japan-...tif
  • This is a male spotty-bellied greenling (Hexagrammos agrammus) protecting several clutches of eggs resulting from spawning with multiple females. During the autumn/ winter breeding season, males keeps watch over developing embryos until they hatch. At the same time, males actively court females that approach, swimming out to greet them and lead them back to carefully prepared spawning areas like the one pictured here. The eyes of developing fish larvae are visible in many of the eggs here, meaning they are close to hatching. Freshly spawned eggs were attached to the opposite side of this cluster. Successful males like this one often attend to a number of egg clusters at different stages of development, each from separate females.
    hexagrammos-agrammus-spotty-bellied-...tif
  • This is a male fat greenling (Hexagrammos otakii) tending to eggs. The eggs comprise several clutches from a number of females. During the autumn to winter breeding season, mature males like this one establish territories and adopt a brilliant yellow-orange coloration. The males court passing females, which can choose to spawn with or to ignore a given male.
    hexagrammos-otakii-fat-greenling-mal...tif
  • Synanceia verrucosa stonefish engaging in a threat display by puffing out its throat to enlarge its appearance. Ambon, Indonesia
    Synanceia-verrucosa-stonefish-ambon-...tif
  • Yellow weedy scorpionfish (Rhinopias frondosa) camouflaged in a patch of soft corals and rubble in the muck. Ambon, Indonesia
    yellow-Rhinopias-frondosa-weedy-scor...tif
  • Bright tangerine-orange lacy scorpionfish in Papua New Guinea
    tangerine-colored-rhinopias-aphanes-...tif
  • This cryptic bottom-dweller is known as a velvetfish (Paraploactis sp.). These fish lack swim bladders, which means that they are negatively buoyant and cannot swim well.
    paraploactis-velvetfish-200903-2477.tif
  • This fat greenling (Hexagrammos otakii) male is tending to several clutches of eggs, which are the result of spawning with multiple females. The bright yellow-orange coloration of the male is indicative of reproductive season. The multiple clutches and large number of healthy eggs show that this is a successful male, meaning that he has attracted many females and has done well protecting the eggs from predators.
    hexagrammos-otakii-fat-greenling-pro...tif
  • Close-up view of 3mm eggs of a hemiclonal hybrid sub-species. The female that spawned the eggs passed on her Hexagrammos octogrammus DNA while making use of a Hexagrammos otakii male to produce viable young. All the fish hatched from these eggs will be females that continue this process, in effect perpetuating a line of all-female fish that carry the same maternal DNA through each generation.
    hexagrammos-octogrammus-otakii-hemic...tif
  • This is a male fat greenling (Hexagrammos otakii) watching over developing eggs. The most prominent in this image are purple, though there were other eggs of varying color, each spawned by a different female. These fish exhibit a range of personalities. This male was highly attentive to his eggs, which were in excellent condition as a result.
    hexagrammos-otakii-fat-greenling-pro...tif
  • This is a rare photo of a juvenile darkfin sculpin (Malacocottus zonurus), about 6cm in length. This genus of fish is found in the North Pacific, generally in deep water, known to a depth of 2000m.
    malacocottus-zonurus-juvenile-darkfi...tif
  • Yellow weedy scorpionfish (Rhinopias frondosa) looking down on the camera lens
    Yellow-Rhinopias-frondosa-weedy-scor..tiff
  • This is a juvenile spiny red gurnard (Chelidonichthys spinosus), a species of searobin that is native to the northwest Pacific. This juvenile fish was about 1.5cm in length. Photographed at a magnification of two times life-size.
    chelidonichthys-spinosus-spiny-red-g...tif
  • Lacy scorpionfish (Rhinopias aphanes) sitting in plain view at the top of a reef at the Black and Silver dive site near Nuakata Island in Milne Bay, Papua New Guinea
    Rhinopias-aphanes-lacy-scorpionfish-...tif
  • Pseudoblennius zonostigma with fins on full display. This genus of sculpins is native to the northwest Pacific Ocean.
    pseudoblennius-zonostigma-sado-japan...tif
  • Profile of an Ambon scorpionfish (Pteroidichthys amboinensis)
    Ambon-scorpionfish-Pteroidichthys-am...tif
  • Pictured here are freshly spawned eggs of a fish called spotty-bellied greenling (Hexagrammos agrammus), known as kujime in Japanese. The fish live in coastal waters of the northwest Pacific, East China Sea, the Yellow Sea and the Sea of Japan. Each egg is about 3mm in size. A developing embryo is visible at the bottom center of the image, with the eye and jaw structures just becoming discernable. Photographed at a magnification of four times life-size.
    hexagrammos-agrammus-eggs-japan-2019...tif
  • Crocodilefish (Cymbacephalus beauforti) lurking in the muck of Lembeh Strait at night, waiting to ambush prey. The fish's low profile and mottled surface provide it with excellent camouflage.
    crocodilefish-camouflaged-in-muck-cy...tif
  • Bright orange Merlet's scorpionfish in Papua New Guinea with attitude in its facial expreesion
    orange-Rhinopias-aphanes-lacy-scorpi...tif
  • Two large tassled scorpionfish (Scorpaenopsis oxycephala) engaged in a territorial dispute. The two fish stared at one another and made gestures of intimidation for a few minutes prior to this sudden conflict, which ended as quickly as it commenced. Ambon, Indonesia
    fighting-tassled-scorpionfish-Scorpa...tif
  • This is a velvetfish (Paraploactis sp.). These fish lack swim bladders, which means that they are negatively buoyant and cannot swim well. They usually blend-in well with their surroundings.
    paraploactis-velvetfish-201002-3760.tif
  • This is a male spotty-bellied greenling (Hexagrammos agrammus) watching over several clutches of developing eggs, which are situation just below the fish's right pectoral fin. Males of this species are tasked with caring for and protecting eggs.
    hexagrammos-agrammus-spotty-bellied-...tif
  • This is a male fat greenling (Hexagrammos otakii) protecting eggs. The eggs comprise several clutches from a number of females. During the autumn to winter breeding season, mature males like this one establish territories and adopt a brilliant yellow-orange coloration. The males court passing females, which can choose to spawn with or to ignore a given male.
    hexagrammos-otakii-fat-greenling-mal...tif
  • This is a male fat greenling (Hexagrammos otakii) watching over several clutches of developing eggs. Normally drab and mottled, males of this species become a bright yellow-orange for the reproductive season.
    hexagrammos-otakii-fat-greenling-pro...tif
  • Profile photo of a spotty-bellied greenling (Hexagrammos agrammus)
    hexagrammos-agrammus-spotty-bellied-...tif
  • Close-up view of newly spawned spotty-bellied greenling eggs (Hexagrammos agrammus). Each egg is about 3mm in size. Photographed at a magnification of four times life size.
    hexagrammos-agrammus-spotty-bellied-...tif
  • Pictured here are freshly spawned eggs of a fish called spotty-bellied greenling (Hexagrammos agrammus), known as kujime in Japanese. The fish live in coastal waters of the northwest Pacific, East China Sea, the Yellow Sea and the Sea of Japan. Each egg is about 3mm in size. Photographed at a magnification of four times life-size.
    hexagrammos-agrammus-eggs-japan-2019...tif
  • Hasegawa-san holding up a freshly caught deep-sea rockcod (Sebastes matsubarai), called akou-dai in Japanese.
    hasegawa-san-deep-sea-rockcod-japan-...tif
  • This is a male spotty-bellied greenling (Hexagrammos agrammus) watching over several clutches of developing eggs, which are situation just below the fish's left pectoral fin. Males of this species are tasked with caring for and protecting eggs.
    hexagrammos-agrammus-spotty-bellied-...tif
  • Close-up view of newly spawned spotty-bellied greenling eggs (Hexagrammos agrammus). Each egg is about 3mm in size. Photographed at a magnification of four times life size.
    hexagrammos-agrammus-spotty-bellied-...tif
  • Demon stinger (Inimicus didactylus) sitting on the sand with venomous spines on full display
    inimicus-didactylus-on-sand-indonesi...tif
  • Juvenile oriental flying gurnard (Dactylopterus orientalis), measuring between two and three centimeters. Photographed during a blackwater dive at Short Dropoff in Palau.
    juvenile-flying-gurnard-dactylopteru...tif
  • White leaf scorpionfish with lighting at an extreme angle to highlight the fish from the background clutter of the reef
    white-leaf-scorpionfish-Taenianotus-...tif
  • In the foreground of this image are several clutches of eggs, being watched over by the fat greenling (Hexagrammos otakii) male in the background. The purple eggs in the middle, however, belong to an all-female hybrid species (Hexagrammos octogrammus and H. otakii) that produces all-female clones, using males of H. otakii to protect its eggs. There is no genetic benefit to the male. This is an example of hemiclonal reproduction.
    hexagrammos-otakii-protecting-hybrid...tif
  • Pictured here are developing eggs of Hexagrammos otakii, known as Ainame in Japanese and fat greenling in English. The eggs are well developed, with eyes, spinal cords and blood vessels clearly visible. Photographed at a magnification of two times life-size.
    hexagrammos-otakii-fat-greenling-egg...tif
  • Two scorpionfish (Scorpaenopsis sp.) engaged in a territorial dispute. The two fish faced off for several minutes without moving, then the pair suddenly leapt toward one another, locking jaws and spinning in circles until one left the area.
    scorpionfish-territorial-dispute-amb...tif
  • Bright red and orange pitted stonefish (Erosa erosa ) in Lembeh Strait, North Sulawesi, Indonesia
    Red-orange-pitted-stonefish-Erosa-er...tif
  • Colorful raggy scorpionfish (Scorpaenopsis venosa) resting among multicolored tunicates and algae on the reef in Ambon, Indonesia
    Scorpaenopsis-venosa-raggy-scorpionf...tif
  • Beautiful orange lacy scorpionfish (Rhinopias aphanes) in Papua New Guinea
    Rhinopias-aphanes-lacy-scorpionfish-...tif
  • Fat greenling (Hexagrammos otakii) eggs nearing maturity, with eyes and vascular structure visible. When newly spawned, the eggs are translucent, with a tinge of pigment, the color of which varies. Here, the eggs have become covered with algae and other things while the embryos developed. Photographed at 4x life-size.
    hexagrammos-otakii-fat-greenling-egg...tif
  • This is a male fat greenling (Hexagrammos otakii) protecting eggs. The eggs comprise several clutches from a number of females. During the autumn to winter breeding season, mature males like this one establish territories and adopt a brilliant yellow-orange coloration. The males court passing females, which can choose to spawn with or to ignore a given male.
    hexagrammos-otakii-fat-greenling-mal...tif
  • Pale leaf scorpionfish (Taenianotus triacanthus) perfectly camouflaged against muck background. Ambon, Indonesia
    Taenianotus-triacanthus-leaf-scorpio...tif
  • Close-up view of eggs of Icelinus pietschi in various stages of development. This species of sculpin is native to the northwest Pacific. Each egg is a few millimeters in diameter. Photographed at four times life-size magnification.
    icelinus-pietschi-sculpin-eggs-japan...tif
  • These are developing eggs of fat greenling (Hexagrammos otakii) fish, each egg measuring around 3mm. The juvenile fish are developed enough that their spinal cords and eyes are clearly visible. At this stage, the unhatched fish are mobile, twisting and turning inside their eggs from time to time. Photographed at a magnification of four times life-size.
    hexagrammos-otakii-developing-embryo...tif
  • Lionfish patrolling the edge of Suzie's Bommie, a popular dive site accessible from Lololata Island Resort near Port Moresby. This small but healthy reef is always teeming with life, including large schools of sweetlips, thousands of basslets and many other marine organisms. This image is licensed on an exclusive basis to BBC through 29 October 2021.
    lionfish-Pterois-volitans-loloata-su...tif
  • This is a lacy scorpionfish (Rhinopias aphanes) opening its mouth in a yawn-like fashion, extending and protruding its jaws in the process.
    rhinopias-aphanes-lacy-scorpionfish-...tif
  • These are newly spawned eggs of fat greenling (Hexagrammos otakii) fish, each egg measuring around 3mm. Photographed at a magnification of four times life-size.
    hexagrammos-otakii-eggs-japan-201910...tif
  • These are newly spawned eggs of fat greenling (Hexagrammos otakii) fish, each egg measuring around 3mm. Photographed at a magnification of four times life-size.
    hexagrammos-otakii-eggs-japan-201910...tif
  • These are newly spawned eggs of fat greenling (Hexagrammos otakii) fish, each egg measuring around 3mm. Photographed at a magnification of four times life-size.
    hexagrammos-otakii-eggs-japan-201910...tif
  • These are developing embryos of a sculpin named Bero elegans, found in the northwest Pacific. The eggs of this species are blue in color and measure about 2mm to 3mm in size. Photographed at a magnification of two times life-size.
    bero-elegans-sculpin-eggs-japan-2019...tif
  • Hidden in plain sight, a yellow weedy scorpionfish (Rhinopias frondosa) showing why it is difficult to find these elusive camouflage specialists. Ambon, Indonesia
    yellow-Rhinopias-frondosa-weedy-scor...tif
  • Yellow weedy scorpionfish (Rhinopias frondosa) looking down on the camera lens
    yellow-weedy-scorpionfish-Rhinopias-..tiff
  • Close-up view of multi-colored fat greenling eggs (Hexagrammos otakii). Each egg is about 3mm in size. Eggs of this species may vary in hue, though there seems to be no particular effect on the development of embryos.
    hexagrammos-otakii-fat-greenling-egg...tif
  • This is a male fat greenling (Hexagrammos otakii) watching over developing eggs. The most prominent in this image are purple, though there were other eggs of varying color, each spawned by a different female. These fish exhibit a range of personalities. This male was highly attentive to his eggs, which were in excellent condition as a result.
    hexagrammos-otakii-fat-greenling-pro...tif
  • This is a close-up view, photographed at 4x life-size, of newly spawned eggs of Hexagrammos otakii, known as fat greenlings or ainame in Japanese. Males of this species protect the eggs, spawning with as many females as possible. Clutches of eggs vary in color, from blues and purples to yellows, oranges and white.
    hexagrammos-otakii-fat-greenling-egg...tif
  • This is a male fat greenling (Hexagrammos otakii) tending to eggs. The eggs comprise several clutches from a number of females.  During the autumn to winter breeding season, mature males like this one establish territories and adopt a brilliant yellow-orange coloration. The males court passing females, which can choose to spawn with or to ignore a given male.
    hexagrammos-otakii-fat-greenling-mal...tif
  • This is a Luna lionfish (Pterois lunulata) being cleaned by a bluestreak cleaner wrasse (Labroides dimidiatus).
    labroides-dimidiatus-cleaning-pteroi...tif
  • Tangerine-orange Ambon scorpionfish (Pteroidichthys amboinensis), photographed in Lembeh Strait, North Sulawesi, Indonesia.
    orange-ambon-scorpionfish-pteroidich...tif
  • White leaf scorpionfish with backlighting to emphasize how thin and fragile these delicate scorpionfish are
    Leaf-scorpionfish-Taenianotus-triaca...tif
  • Bright red and orange pitted stonefish (Erosa erosa ) in Lembeh Strait, North Sulawesi, Indonesia
    Erosa-erosa-pitted-stonefish-lembeh-...tif
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