For the purposes of the trade description laid down in Article 7, a distinction shall be drawn between the following covering media, with or without the addition of other ingredients:
olive oil;
other refined vegetable oils, including olive-residue oil used singly or in mixtures;
tomato sauce;
natural juice (liquid exuding from the fish during cooking), saline solution or water;
marinade, with or without wine;
any other covering medium, on condition that it is clearly distinguished from the other covering media defined in points 1 to 5.
These covering media may be mixed, but olive oil may not be mixed with other oils.