Overleaf: Territorial males of the corkwing wrasse Symphodus melops (Linnaeus, 1758) are nest-building and they aggressively defend the nest, which is built among seaweeds or seagrasses. This species is heavily fished and exploited as a cleaner fish in salmon farms (photograph from Halsnøy, Hardangerfjord, western Norway, by Erling Svensen).
Note: This thematic issue should be cited: Skaala Ø, Sjøtun K, Dahl E, Husa V, Bjørge A (guest editors). 2014. Interactions between Salmon Farming and the Ecosystem: Lessons from the Hardangerfjord, Western Norway. Thematic Issue Nr. 8, Marine Biology Research 10(3): 197–328.