I was surprised to find that the dogfish tasted more like tinned sardines. So I tried making ... Add the mashed beans to the pan with the fried onions and cook over a medium heat.
If you can resist the temptation to eat fried canned sardines right out of the air ... shredded lettuce, and tomatoes.
Sardines are delicious hot or cold, either served with robust tomato sauces that counteract the oiliness of the fish, or dressed with butter, lemon and fresh herbs and served with boiled potatoes.