The standard of European retail fish markets continues to improve. Each country has its seafood specialties, which often reflect historic fisheries. The Dutch have their salted herring and smoked eel and the Spanish love their hake. In the last few years there has been an increase in the variety and quantity of farmed fish for sale. European retail fish markets began selling farmed rainbow trout and salmon many years ago. Now many contintental retail fish markets sell farmed tilapia and Vietnamese catfish as well.