Farming remarks
Hypophthalmichthys nobilis is one of the four Chinese major carps, together with H. molitrix, Ctenopharyngodon idella and Mylopharyngodon piceus. H. nobilis is a native freshwater fish from lakes, rivers, and reservoirs of south and central China, but has already been introduced in many countries. This eurythermic carp dwells in the upper layer of the water column, being considered a planktivorous fish – especially feeding on zooplankton – but it can also feed on detritus and BENTHIC organisms on the bottom opportunistically. It is one important aquaculture species that has been farmed for more than a thousand years and, together with H. molitrix, is one of the most intensively cultured fish species in Asia.
H. nobilis is frequently used as a filter-feeding fish in polyculture ponds in China, stocked for water quality improvement and as a biocontrol method for phytoplankton. Besides ponds, this carp is also commonly raised in pens, cages, or reservoirs with other carps or other fish species as Ictalurus punctatus and Polyodon spathula. A competition for food may be expected with Labeo catla or with other FISHES with similar feeding habits in such polycultures. It is a fast growing fish that can be sold before reaching maturity. In natural conditions, this carp migrates to the upper reaches of rivers to spawn during early summer, with rising water level as the essential stimulus for this. Despite its commercial importance, most wild information is still missing for this species. After being harvested, very little handling and processing is used with this fish, as it is usually consumed fresh, mainly locally. Further research about the slaughtering process is needed as well as about substrate use, stress response, and malformations under farming conditions.
For details see: WelfareCheck | farm (latest major release: 2021-07-30)
Related news
In our FishTalk podcast, please find new episodes of the FishEthoBase programme here. Series 7 is about Bighead carp (Hypophthalmichthys nobilis), Black carp (Mylopharyngodon piceus), and Silver carp (Hypophthalmichthys molitrix). In just a few words - less than 3 min - you will learn about natural needs, behaviours or farming conditions of the species to accompany their profile in the FishEthoBase.
Bighead carp, scientifically known as Hypophthalmichthys nobilis, is one of the four Chinese major carps and can be found in lakes, rivers, and reservoirs of south and central China. It is one of the most intensively cultured fishes in Asia.
As this carp is a planktivorous fish, it is reared not just for its production, but also as a filter-feeding fish in polycultures, helping to improve the water quality and controlling the phytoplankton. Bighead carp is a fast growing fish, which is also interesting for aquaculture, but this means it is usually sold before reaching maturity.
Because bighead carp can also feed on detritus and organisms living on the bottom opportunistically, it could be important to provide access to substrate for this carp in captivity, so it has more feed choices. Moreover, as it is commonly sold live or fresh locally, this fish probably dies by asphyxia, which means much suffering. As no high-standard slaughter method is available for this carp, further research about this is urgent.
If you would like to know more about bighead carp, please visit its profile here.