Stalking predator. Feeds mainly on hard-shelled invertebrates and occasionally fish. Wolf-eels grab their prey with their enlarged canines and crush it with their rear molars. Known prey consists of crabs, clams, mussels, sea urchins, sand dollars, snails, and abalone. A population of wolf eels at the head of the Monterey submarine canyon in California has relied on sand dollars at least seasonally, a food presumably rather low in nutrition for its bulk. Free-swimming juveniles eat plankton and small fish.
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