Mackerel midge

(Zool.) a very small oceanic gadoid fish of the North Atlantic. It is about an inch and a half long and has four barbels on the upper jaw. It is now considered the young of the genus Onos, or Motella.

See also: Mackerel

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.