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Grass carp, scientifically named Ctenopharyngodon idella or white amur, is one of the top freshwater culturing species.
Amur grows very fast and has a maximum body weight of 35 kg in nature and has at least a 10 year of lifetime. Amur is a river fish and has a greater tendency to live in the running waters. In Iran, herbivorous carp is selected as the second cultivated species along with other species (silver, common and bighead carps).
Grass carp feeds first from animal plankton and after reaching about 3 cm in body length feeds of multi-cell organisms. This herb-eating fish is because of its choice of plant for feeding has been is a very suitable choice for multiple breeding and has been introduced in many countries for the purpose of plant control. In fact, its type of feeding makes the pond more suitable for other fish such as common carp. Amur fish have special pharyngeal teeth for crushing plants, and this is essential for herbivores to mechanically break the structure of plants in order to digest it.
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