Freshwater prawns

Culture-based fisheries (CBF) are practices to enhance fish stocks in waters that don't have enough natural recruitment to sustain a fishery. CBF practices are usually applied in small water bodies such as village dams and irrigation reservoirs. Fish growth is driven by the natural productivity of the waters. Usually there is no feeding and the fish are left to forage on natural food supplies. Ownership and management of the stock distinguish CBF as form of extensive aquaculture.

The Asia Regional Advisory Group on Aquatic Animal Health meets annually to discuss regional disease issues including emerging disease threats. The group was established by the Governing Council of NACA to provide advice to member governments in the Asia-Pacific region. This collection comprises the reports of the annual meetings of the group. The reports are a rich source of information concerning the current disease status of the region and new or emerging diseases of aquatic animals.

The farming of the giant freshwater prawn has expanded rapidly in Thailand. Production has increased from less than 3 tons/year in 1976 to an estimated output of more than 1,200 tons in 1982. This rapid growth was largely stimulated by the Chachoengsao Fisheries Station established solely to promote culture of the prawn. Services of the station comprise the production and free distribution of post-larvae from 1976-1978, along with training and extension programmes.

This document briefly describes the status of the aquaculture in the Regional Aquaculture Lead Centre for Thailand circa 1981, in terms of available species and research priorities. Work was conducted on air-breathing catfish Clarias batrachus, snakehead Channa striatus, giant freshwater prawn Macrobrachium rosenbergii, silver barb Puntius gonionotus, snakeskin gourami Trichogaster pectoralis, mussels Perna viridis and oysters Crassostrea spp. Includes brief descriptions of culture methods prevalent for these species at the time.