Belveder Smoked Sprats in Oil 160g/5.5oz. Smoked Sprats in Oil. Sprat is the common name applied to a group of forage fish that are commonly smoked and preserved in oil. These tiny fish; they benefit the circulatory nervous skeletal reproductive and digestive systems not to mention improvements in the appearance of hair and skin and an increase in joint comfort. They also boost brain health and lower the levels of bad cholesterol.