Sailfin Sculpin, nautichthys oculofasciatus, in small crevice surrounded by strawberry anemone, Corynactis californica. Sailfin sculpins are largely nocturnal, when they emerge from their hiding places to feed on small shrimps and crabs. During the day, they commonly rest, upside down, on the roof of small crevices. They are named for the first four rays of their dorsal fin which, when visible, is normally held erect when swimming, perhaps to make it a more prickly and unattractive meal for larger fish. These little fish spawn in shallower water but are found down to around 360 feet.
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