The small-mouth bass is a species of surface water fish of the family of Centrarchidés to which we give names varied in French. We meet this fish in the plans of water of the east central region of North America.

Of North American origin, its local common noun small-mouth Bass derives from the Algonquian language: AT-CHI GANE (the one who fights), in reference to his very belligerent behavior so looked for by the anglers. It is also known under the names of black Pole, Perche of small-mouth America or still small-mouth Black-bass.

Generally, his length varies between 30 in 40 cms (maximum 70 cms) for a weight from 0,45 to 0,90 kg. His longevity is of approximately 15 years.