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rudderfish

noun

Definition of rudderfish

:any of various fishes reputed to follow or accompany ships:
a :pilot fish 1
b :banded rudderfish
c :any of several butterfishes (family Stromateidae)
d :any of various fishes of the family Kyphosidae; especially : bermuda chub
e :the opaleye or other fish of the family Girellidae

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Origin and Etymology of rudderfish

1rudder + fish

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