Wikipedia
Cotriade
Cotriade (Kaoteriad in Breton) is a fish stew speciality from the French province of Brittany that is made with different kinds of fish, as well as potatoes. Unlike bouillabaisse, another French stew, it usually does not contain shellfish. It is traditionally served by pouring it over toasted baguette.
It is also very prominent in other French regions surrounding Brittany due to the access to the sea.
It is known in the UK as Brittany Fish Stew.