The bighead carp (whole fish) is a species of freshwater fish, one of several Asian carps. It is one of the most intensively exploited fishes in aquaculture, with an annual worldwide production of over three million tonnes in 2013, principally from China. It is also the third most consumed fish in the United States, where it was introduced in 1973.
Bighead carp are native to large rivers and lakes in southern China but have been widely distributed as a result of releases from aquaculture facilities, which began as early as 1966. It has also been introduced into aquatic habitats in Spain, Portugal, Italy, Israel, South Korea, Japan, and the United States. Bighead carp are often used to perform phytoremediation to clean up waterways by removing nutrients such as nitrogen and phosphorus from contaminated waters.
Bighead carp grow rapidly to approximately, reaching within its first year of life. Although they can grow at rates per day, the average growth rate of bighead carp is. Bigheads adapt to most water conditions but prefer large bodies of slow or standing water with soft bottoms, such as lakes, ponds, and backwaters. The average length at sexual maturity for bighead carp is approximate, while females are slightly larger than males. Spawning occurs in rivers or lakes with gravelly bottoms. Bighead carp are omnivores, feeding mostly on zooplankton and phytoplankton. They also feed near the surface of the water where there is more light penetration, avoiding the deeper parts of a body of water where there isn't as much solar energy for photosynthesis. Their diet includes aquatic insects, insect larvae, frogs, crayfish, and mollusks.
Bighead carp are filter feeders that eat phytoplankton and planktonic organisms such as zooplankton. They also consume sediments at the bottom of the river or lake, which consists of decaying organisms. Bighead carp are not an important food source for humans, but their high concentrations of omega-3 fatty acids make them useful in aquaculture feeds. Their schooling behavior also renders them vulnerable to harvest with conventional fishing gear.
Bighead carp are native to large rivers and lakes in southern China but have been widely distributed as a result of releases from aquaculture facilities, which began as early as 1966. It has also been introduced into aquatic habitats in Spain, Portugal, Italy, Israel, South Korea, Japan, and the United States. In many cases, their introduction was likely via fish farm escapes.
Bighead carp are often used to perform phytoremediation to clean up waterways by removing nutrients such as nitrogen and phosphorus from contaminated waters. The bighead carp is the third most consumed fish in the United States, where it was introduced, according to National Geographic Magazine. They were introduced into aquaculture systems in 1973; however, they escaped into natural waters between 1977 and 1985 during flooding events.
Global tolstolob production
Tolstolob fish are a popular choice for aquaculture and fisheries around the world. They are known for their high flesh quality and disease resistance. In addition, tolstolob fish grow relatively quickly and can reach sizes of up to 1 meter in length. Because of these qualities, tolstolob fish are one of the most popular types of fish farmed in aquaculture operations globally.
Tolstolob fish are native to the waters of the Black and Caspian seas. They were first introduced into aquaculture operations in Europe during the 1970s. Since then, tolstolob fish have been successfully introduced into aquaculture operations in many other parts of the world, including North America, South America, Africa, and Asia.
Tolstolob fish are typically farmed in freshwater ponds or cages. In some cases, tolstolob fish may also be farmed in saltwater operations. The main feed for tolstolob fish is typically a commercial pellet feed, although they will also consume smaller organisms such as zooplankton and phytoplankton.
Tolstolob fish are harvested when they reach market size, which is typically around 1 kilogram. The global production of tolstolob fish has been steadily increasing in recent years and is currently estimated to be around 200,000 metric tons per year. The majority of tolstolob fish produced globally is consumed within the country of origin. However, tolstolob fish are also exported to many other countries around the world.