Aquaculture of catfish, Pangasianodon hypophthalmus (Sauvage), locally known as “ca tra”, and commonly
referred to as striped catfish, river catfish and sutchi catfish, in Vietnam, having recorded a production of
683,000 tonnes in 2007, valued at about 645 million US$ is one of the largest single species based farming
system, restricted to a small geographical area, in the world. The product is almost totally exported to over
100 countries as frozen fillets, as an acceptable alternative to white fish. Catfish is farmed mostly in earthen
ponds, up to 4 m deep, in nine provinces in the Mekong Delta in South Vietnam. The results of the grow-out
system of catfish farming in the Mekong Delta from a survey of 89 farms are presented. The farm size ranged
from 0.2 to 30 ha with a mean of 4.09 ha. The frequency distribution of the yield in tonne/ha/crop and
tonne/ML/crop corresponded to a normal distribution curve, where 75% of the farms yielded 300 tonnes/
ha/crop or more. It was found that the yield per crop was significantly correlated (p