In six major exported items, shrimp and pangasius represented a large proportion (70 percent) of total seafood export value of Vietnam. But this year, proportion of shrimp exports is reduced over the same period (from 40.7 percent to 39.3 percent), crabs decreased from 2.1percent to 1.7 percent, while tuna increased from 6.3 percent to 6.6 percent and pangasius increased from 29 percent to 30.6 percent because of volatility in average export price. Compared to the same period of 2010, in the frst 9 months of 2011, bivalve mollusk export price dropped sharply 2.9 percent and export volume also dropped 6.5 percent. The market share of Vietnam mollusk is declining sharply. Vietnam tuna export is more positive. Although tuna export volume of 2011 increased by only 3.5 percent (much lower compared to the increase of 28.3 percent of 2010 on that of 2009), the tuna export price recorded the highest level among exported seafood items (24 percent, from US$3.7 per kilogram to US$4.6 kg per kilogram). Therefore, Vietnam tuna export value increased 28.9 percent to US$284.7 million. Like tuna, pangasius export price also soared 21 percent from US$2.15 per kilogram to US$2.61/kg (despite a decrease of 5.2 percent in 2010). Shrimp export price reported the lowest increase among exported seafood items (except for bivalve mollusk). However, shrimp export volume reached high level, so increase of this item equal to that of other exported items.