There are two subspecies of largemouth in Mississippi waters. The northern largemouth bass, Micropterus salmoides salmoides, is native to Mississippi. The Florida largemouth bass, Micropterus salmoides floridanus, has been introduced into many Mississippi lakes. Largemouth bass are usually green with dark blotches that form a horizontal stripe along the middle of the fish on either side. The underside ranges in color from light green to almost white. Their upper jaw extends far beyond the rear margin of the eye.
Largemouth bass can reach weights greater than 10 to 15 pounds, with females growing larger and faster than males. Largemouth bass can reach lengths greater than 26 inches. Largemouth females can live up to 10 to 12 years with males living between five and seven years.