Fish soup is often served 'just' as an appetizer meal before main course. It is very 'light' meal, but there are also recipes for main course fish soups.
Boiled Saddled Seabream with olive oil, parsley, garlic and lemon is an easy, but very tasty fish meal that is prepared in no time.
Cooked halibut fillets with potatoes is type of a fish soup that can be served as appetizer, or even as a main dish. It can be made from frozen halibut fillets or from fresh ones.