Of the 39 samples positive for V. parahaemolyticus by PCR method, 9 showed presence of tdh (fresh water fish-2, sea fish-4 and mutton-nil), 28 showed trh (freshwater fish-12, sea fish-16 and mutton-nil) and 3 showed presence of both tdh and trh (fresh water fish-1, sea fish-2 and mutton-nil).