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  • A sabretooth blenny (Petroscirtes breviceps) relaxing among delicate folds of brown algae Colpomenia sinuosa
    petroscirtes-breviceps-blenny-colpom...tif
  • Two male Zoarchias major eelpouts with mouths wide open facing off in the middle of Sargassum hemiphyllum algae. The fishes blend-in well with both the coloration and texture of these brown algae and other surrounding vegetation and substrate, providing some measure of protection in the form of camouflage from larger fish patrolling the reef.
    zoarchias-major-eelpouts-fighting-sa...tif
  • Close-up view of developing Korean sandlance (Hypoptychus dybowskii) embryos inside eggs, each about 2mm in size. The eggs are on sargassum (Sargassum horneri (Turner) C.Agardh), stuck to the macro algae by secretions from the adult fish. Photographed at a magnification of four times life-size.
    hypoptychus-dybowskii-eggs-korean-sa...tif
  • This is a U-mark sandperch (Parapercis snyderi) poised on top of delicate folds of brown algae Colpomenia sinuosa.
    parapercis-snyderi-u-mark-sandperch-...tif
  • Zoarchias major eelpouts engaged in competitive fighting within a mass of Sargassum hemiphyllum algae. These fish, known as ookazunagi in Japanese, blend-in well with the coloration of this and other algaes and seaweeds, providing them with some protection from predation by larger fish.
    zoarchias-major-male-eelpouts-compet...tif
  • This is a newly hatched juvenile Eumicrotremus awae lumpsucker, a species found along the Pacific coast of Japan's main island of Honshu. The fish is 2mm to 3mm in size, perched on brown algae (Lessoniaceae). The white ring pattern is characteristic of juveniles, disappearing as the juvenile takes on permanent coloration. This one has already begun to adopt a greenish hue.
    eumicrotremus-awae-juvenile-lumpsuck...tif
  • This is a species of clingfish (Aspasma minima) that is found in the northwest Pacific. This individual with its mouth open was one of a pair that was living on a large growth of brown algae (Ecklonia cava).
    aspasma-minima-clingfish-mouth-open-...tif
  • This is a pair of Pair of Aspasma minima clingfish hiding underneath part of a large growth of Ecklonia cava brown algae. This species is found in the northwest Pacific.
    aspasma-minima-clingfish-pair-japan-...tif
  • Pictured here are several clusters of Korean sandlance (Hypoptychus dybowskii) eggs, with developing embryos becoming visible in some of the eggs. Each egg is about 2mm in size. These small fish, growing up to 10cm in length, produce a sticky secretion in their kidneys that they use to adhere eggs to sargassum (Sargassum horneri (Turner) C.Agardh) as shown here.
    hypoptychus-dybowskii-eggs-korean-sa...tif
  • This is a juvenile smooth lumpsucker (Aptocyclus ventricosus) nestled among folds of wakame seaweed (Undaria pinnatifida). Juveniles of this species spend the early part of their lives in shallow water, then descend to the deep. This individual was about 6mm in size.
    aptocyclus-ventricosus-juvenile-waka...tif
  • This is a newly hatched juvenile Eumicrotremus awae lumpsucker, a species found along the Pacific coast of Japan's main island of Honshu. The fish is 2mm to 3mm in size, perched on brown algae (Lessoniaceae). The white ring pattern is characteristic of juveniles, disappearing as the juvenile takes on permanent coloration. This one has already begun to adopt an orange-red hue.
    eumicrotremus-awae-juvenile-lumpsuck...tif
  • Pictured here is a pair of juvenile smooth lumpsuckers (Aptocyclus ventricosus), sheltered among folds at the base of wakame seaweed (Undaria pinnatifida). Pattern and color variation among juveniles is normal. Juveniles of this species spend the early part of their lives in shallow water, then descend to the deep. These fish are around 6mm in size, photographed at magnification of two times life-size.
    aptocyclus-ventricosus-lumpsucker-ju...tif
  • This is a species of clingfish (Aspasma minima) that is found in the northwest Pacific. This individual was one of a pair that was living on a large growth of brown algae (Ecklonia cava). As can be seen here, the fish is capable of turning its eyes to look directly overhead.
    aspasma-minima-clingfish-japan-20210...tif
  • Female Zoarchias major peeking her head out from the stalk or holdfast of wakame seawood, also known as mekabu (Undaria pinnatifida). These fish are active, often moving around the reef, taking cover in seaweed, algae and holes.
    zoarchias-major-in-mekabu-wakame-sea...tif
  • This is a newly hatched juvenile Eumicrotremus awae lumpsucker, a species found along the Pacific coast of Japan's main island of Honshu. The fish is 2mm to 3mm in size, perched on brown algae (Lessoniaceae). The juveniles retain this distinct pattern with white rings for a brief time, eventually taking on solid coloration that varies from brown and red to green, pink and other hues.
    eumicrotremus-awae-juvenile-lumpsuck...tif
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