Five people were later transferred directly to country's leading Cho Ray Hospital in Ho Chi Minh City in the same day.
Five other suffered same symptoms of vomiting, convulsion fits and their bodies turned blue. All hail from Phan Ri Cua Town in Tuy Phong of Binh Thuan Province.
All six are fishermen. They were catching the fish and then make it for the meal.
Puffer fish are the world's most toxic group of fish and their livers, ovaries and skin contain tetrodotoxin, 100 times more lethal than cyanide.
