The upper jaw ( maxilla) of a largemouth bass extends beyond the rear margin of the orbit. The largemouth bass is an olive-green to greenish gray fish, marked by a series of dark, sometimes black, blotches forming a jagged horizontal stripe along each flank. This study concludes that Lacépède's name is the correct binomial for the Florida bass and that the oldest available binomial for the largemouth bass is Cuvier's Huro nigricans, which has a type locality of Lake Huron which is within the range of the largemouth bass. floridanus) and outside that of the largemouth bass. Recent phylogenomic studies, however, place the type locality given by Lacépède as within the range of the Florida bass ( M. Lacépède based his description on an illustration of a specimen collected by Louis Bosc near Charleston, South Carolina. The largemouth bass was first formally described as Labrus salmoides in 1802 by the French naturalist Bernard Germain de Lacépède with the type locality given as the Carolinas. However, they have become an invasive species in some areas, causing the decline, displacement or extinction of native species through predation and competition. It is a highly prized sport fish among anglers for their vigorous resistance when caught, and have been introduced to many regions due to their popularity in bass fishing and tolerance to urban streams. The largemouth bass is the state fish of Georgia and Mississippi, and the state freshwater fish of Florida and Alabama. It is the largest species of the black bass, with a maximum recorded length of 29.5 inches (75 cm) and an unofficial weight of 25 pounds 1 ounce (11.4 kg). Recent studies have concluded that the correct binomial name for the Florida bass is Labrus salmoides, while the oldest available binomial for the largemouth bass is Cuvier's Huro nigricans.

The largemouth bass was first described by French naturalist Bernard Germain de Lacépède in 1802. It is known by a variety of regional names, such as the widemouth bass, bigmouth bass, black bass, bucketmouth, largie, Potter's fish, Florida bass, Florida largemouth, green bass, bucketmouth bass, green trout, Gilsdorf bass, Oswego bass, LMB, and southern largemouth and northern largemouth.

The largemouth bass ( Micropterus salmoides) is a carnivorous freshwater ray-finned fish in the Centrarchidae (sunfish) family, native to the eastern and central United States, southeastern Canada and northern Mexico.

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