Photo - John Van Niel
Carp in the Canal want access to the warm, nutrient-rich waters of the Main Pool. The refuge hopes to keep them out because carp stir up silt, which reduces sunlight penetration and prevents plant growth. Underwater plants are essential to the marsh community. When water levels subside and water stops flowing from the Main Pool, carp will disperse back into the Canal.
Native to Asia, carp were introduced to the United States during the 1880's by the U.S. Fish Commission as a food fish. Carp proved detrimental to native fish populations and never became as popular for game or food in North America as they are in Europe and Asia.
Although carp have been known to reach a length of 4.5 feet and a weight of 80 pounds, the typical carp is between 1-2 feet long and weighs between 2 to 10 pounds.