Carps, which are species of fish from the family Cyprinidae, are also considered invasive exotic species. They adapt to the environment where they were introduced, develop a great power of reproduction and dispersion, which contributes to the extinction of animals and plants and the modification of habitats, among other impacts.
There are several species in this family (more than two thousand), and some are commercially cultivated. In Brazil, common carps and the so-called Chinese carps were introduced, 
even though the common carp is also of Chinese origin.
In addition to these, Indian carps such as catla (Catla catla), rohu (Labeo rohita), mrigal (Cirrhinus mrigala), and kalbasu (Labeo calbasu) are cultivated on a large scale in various countries. These Indian carps have a more rounded shape due to their small head and greater height.
The common carp is the most cultivated species worldwide. Check out some curiosities:
• It was the first species cultivated by humans, in 500 B.C. Originating from East Asia, it was introduced to Europe in the 13th century, and since this introduction occurred in Germany, many still call it the German carp.
• Common carps are omnivorous but prefer to feed on small animals found at the bottom of ponds. In addition to stirring up the sediment, these carps often burrow into the walls of the (excavated) tanks in search of food, causing the sides to collapse.
• The carp can weigh over 15 kg; however, for commercialization, the desired weight varies from 800g to 2 kg.Exotic Species
Due to the lack of natural predators, invasive exotic species multiply rapidly, competing or even directly feeding on native species.
Source: http://peixevivocemig.blogspot.com