Jackknife Fish (noun) Definition, Meaning & Examples

noun, plural jack·knife-fish·es, (especially collectively) jack·knife-fish.Ichthyology.
  1. a black and white, American drum, Equetus lanceolatus, found in tropical areas of the Atlantic Ocean, having an elongated dorsal fin that is held erect.
Jackknife Fish (noun) Definition, Meaning & Examples

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