Encyclopædia Britannica, Ninth Edition/Abdominales

For works with similar titles, see Abdominales and Abdominal Fishes.

Abdominales, or Abdominal Fishes, a sub-division of the Malacopterygious Order, whose ventral fins are placed behind the pectorals, under the abdomen. The typical abdominals are carp, salmon, herring, silures, and pike.