This is a top-down view of a juvenile Eumicrotremus uenoi lumpsucker, estimated length three to four millimeters from head to tip of caudal fin. As these tiny fish mature, they lose the white rings that characterize the juveniles. This fish is sitting on Colpomenia sinuosa algae. The white crystals are grains of sand, which provide a sense of scale. This species is found in the North Pacific, on the western coast of Japan and southern coast of the Korean peninsula. Photographed at magnification of four times life-size.
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