Round Scad is common food of Vietnamese, especially for many people need protein to nourish their health after they work by manual work all day.  
        There are two kinds of Round Scad: Round Scad is called Decapterus Maruadsi and Layang Scad is called Decapterus Macrosoma. Round Scad often has catched in Nha Trang Town coastal region, almost in Quang Ngai Province and Binh Dinh Province. Layang Scad has almost in Long Hai beach. The customer, the people have low salary, almost the workers like to eat Layang Scad more than Round Scad because Layang Scad looks like more beautiful, having round boby, blue sunburnt skin and having less small bone than Round Scad.
        Finished – product Round Scad is rather variety as fresh Round Scad (use in daily) has frozen total fish(baiting food for export). Dried cooking Round Scad with headless no use innards. And Round Scad has just cooked in packing of 3 kg, preservation in coolhouse (after selling out market).

       Cooking of Dried Round Scad is the traditional career of the central fishermen, the most famous in Quang Ngai, Binh Dinh, Phu Yen Province. This job has also got the inhaled ways as cooking Anchovy such as: how methods to keep fire, washing fresh fish, how time to preserve with salt before sorption the least 24 hour. If cooking of Anchovy in the morning, drying, and in the afternoon we bring into the house, Round Scad have to dry about 3 sunny days plus 1 day preserving with salt is total 4 days. We can bring them to go out the selling market.
        Talking about Round Scad origin, they have relationship together as: commercial name of Ca Nuc in Vietnam is Round Scad, Ca Ngan is called Yellow Tail Scad, Ca Mat Kieng is called Red Big Eye Scad.
         Round Scad meat is very swift. If the chef can cure well, they give a bit spice (five flavors) when stewing Round Scad. When we eat them, we feel as eating beef. Many people think that: Round Scad has origin from the Tuna or Auxis Rochei is called other name Bullet Tuna. Nobody proves the Round Scad being Bullet Tuna themselves, because Tuna and Bullet Tuna has got commercial name being Tuna but not Scad.