The striped bass (Morone saxatilis), also called the Atlantic striped bass, striper, linesider, rock, or rockfish, is an anadromous perciform fish of the family Moronidae found primarily along the Atlantic coast of North America. It has also been widely introduced into inland recreational fisheries across the United States. Striped bass found in the Gulf of Mexico are a separate strain referred to as Gulf Coast striped bass.
The striped bass is the state fish of Maryland, Rhode Island, and South Carolina, and the state saltwater (marine) fish of New York, New Jersey, Virginia, and New Hampshire.
The history of the striped bass fishery in North America dates back to the Colonial period. Many written accounts by some of the first European settlers describe the immense abundance of striped bass, along with alewives, traveling and spawning up most rivers in the coastal Northeast.
Morphology and lifespan
The striped bass is a typical member of the family Moronidae in shape, having a streamlined, silvery body marked with longitudinal dark stripes running from behind the gills to the base of the tail. Common mature size is . The largest specimen recorded was , netted in 1896. Striped bass are believed to live for up to 30 years. The average size in length is and approximately .
Distribution
Natural distribution
Striped bass are native to the Atlantic coastline of North America from the St. Lawrence River into the Gulf of Mexico to Louisiana. They are anadromous fish that migrate between fresh and salt water. Spawning takes place in fresh water.
Introductions outside their natural range
Striped bass have been introduced to the Pacific Coast of North America and into many of the large reservoir impoundments across the United States by state game and fish commissions for the purposes of recreational fishing and as a predator to control populations of gizzard shad. These include: Elephant Butte Lake in New Mexico; Lake Ouachita, Lake Norman in North Carolina; Lake Norfork, Beaver Lake and Lake Hamilton in Arkansas; Lake Thunderbird in Illinois; Lake Pleasant, and Lake Havasu in Arizona; Lake Powell along the Arizona/Utah border; Castaic Lake, Pyramid Lake, Silverwood Lake, Diamond Valley Lake, and San Francisco Bay-Delta in California; Lewis Smith Lake in Alabama; Lake Cumberland in Kentucky; Lake George in Florida; Lake Murray in South Carolina; Lake Lanier in Georgia; Watts Bar Lake, in Tennessee; Lake Mead, Nevada; Lake Texoma on the border of Texas and Oklahoma, Lake Tawakoni, Lake Whitney, Buffalo Springs Lake, Possum Kingdom Lake, and Lake Buchanan in Texas; Raystown Lake in Pennsylvania; Lake Wallenpaupack in Northeastern Pennsylvania; Umpqua River in Oregon and in Virginia's Smith Mountain Lake and Leesville Reservoir.
Striped bass have also been introduced into waters in Ecuador, Iran, Latvia, Mexico, Russia, South Africa, and Turkey, primarily for sport fishing and aquaculture.
Environmental factors
The spawning success of striped bass has been studied in the San Francisco Bay-Delta water system, with a finding that high total dissolved solids (TDS) reduce spawning. At levels as low as 200 mg/L TDS, an observable diminution of spawning productivity occurs. They can be found in lakes, ponds, streams, and wetlands.
Though the population of striped bass was growing and repopulating in the late 1980s and throughout the 1990s, a study executed by the Wildlife and Fisheries Program at West Virginia University found that the rapid growth of the striped bass population was exerting a tremendous pressure on its prey (river herring, shad, and blueback herring). This pressure on their food source was putting their own population at risk due to the population of prey naturally not coming back to the same spawning areas.
In the United States, the striped bass was designated as a protected game fish in 2007, and executive agencies were directed to use existing legal authorities to prohibit the sale of striped bass caught in federal waters in the Atlantic Ocean and Gulf of Mexico. In addition, Connecticut, Maine, New Jersey, New Hampshire, Pennsylvania, and South Carolina have designated striped bass as a game fish in state waters.
In Canada, the province of Quebec designated the striped bass population of the Saint Lawrence as extirpated in 1996. Analysis of available data implicated overfishing and dredging in the disappearance. In 2002, a reintroduction program was successful.