Mrigal

Cirrhinus cirrhosus

Cirrhinus cirrhosus (Hindi नारैन ) is an economically important carp fish that is native to the Indian subcontinent.

Description

Cirrhinus cirrhosus has an elongated body, relatively large scales, blue-green in color with a very light tone on the back, which is sometimes slightly yellowish on the flanks. The fins have a reddish orange to hem. The species is characterized by the following formula fins: Dorsal 12-15, Anal 0 He may be an appropriate food supply meters long and 13 kilograms up to one, the average length is 30 centimeters. Guarantees are catches of 9.2 kg from the Palm Tree Lagoon in Thailand and 15.4 kilograms from India, the Godavari River in India this species reaches reportedly 25 kg maximum weight.

Occurrence and habitat

Cirrhinus cirrhosus originates from the Ganges and the Brahmaputra and has its spread in many other Indian streams and rivers. Meanwhile, he was introduced in many Asian countries such as Bangladesh, Bhutan, Cambodia, China, Laos, Malaysia, Mauritius, Myanmar, Nepal, Pakistan, Philippines, Sri Lanka, Thailand and Vietnam, so his Gene Center can not be uniquely determined. Cirrhinus cirrhosus inhabited predominantly fast-flowing rivers and can tolerate high salinity.

Way of life

Juveniles to about five centimeters in length are still omnivorous, while adults feed almost exclusively herbivores. Cirrhinus cirrhosus eats mostly plankton and algae grazing grass on stones from. The fish spawn on sand or clay substrate in shallow water areas with depths of 50 to 100 centimeters from. A six -pound female can lay up to a million fish eggs with a diameter of one millimeter.

Benefit and risk status

In India, it holds Cirrhinus cirrhosus in extensive fish farms, in 2008 463.520 tons of fish were produced. Although it is widely held in artificial ponds, a natural increase is not as given. The reproduction must be artificially induced. Especially in the period from July to November, the demand for seedlings is very high. After three years the fish reach the size of 40 cm with a weight of approximately one kilogram. He also plays a certain role as a sport fish for anglers. As the wild population of Cirrhinus cirrhosus is exposed in their natural habitat the Cauvery River Ganges and anthropogenic disturbances, it is classified on the IUCN Red List as endangered. It is reported that wild catches have declined by about 80%.