Fish Cakes

Makes 12 fish cakes or burger patties, or 24 mini fish balls 1 tin (410g)  pilchards in tomato sauce or 1 tin salmon 400g  poached white fish (e.g. hake) 1 medium onion, peeled and finely grated or chopped 30ml fresh parsley, finely chopped (2T) 375 ml lower GI oats(1...