Definition of rudderfish in US English:

rudderfish

noun

  • 1A sea chub of the family Kyphosidae; especially the Bermuda chub, Kyphosus sectatrix.

  • 2Chiefly US. Either of two vertically-striped carangids: the pilotfish, Naucrates ductor, and (more fully "banded rudderfish") Seriola zonata, an amberjack of the West Atlantic.

  • 3A fish of the family Centrolophidae; especially (US, now rare) the barrelfish, Hyperoglyphe perciformis (more fully "black rudderfish"), and (NZ) the blackfish, Centrolophus niger.

Origin

Mid 18th century; earliest use found in Philosophical Transactions of the Royal Society of London. From rudder + fish.

Pronunciation

rudderfish

/ˈrʌdəfɪʃ/