Wrasse

A new project aims to produce ballan wrasse that are more effective at eating sea lice on salmon farms.

New research suggests that using lumpfish or ballan wrasse to combat sea lice in offshore fish farms isn’t workable – the strong currents and extreme weather conditions leave them at risk of exhaustion and injury.

A series of feed trials suggests that farmed ballan wrasse should not be given extruded feed, as it has been linked to the development of skeletal deformities, although further research is still required.

A novel virus, which is associated with high mortality shortly after hatching, has been discovered in farmed juvenile ballan wrasse.

Eight innovative projects to support the sustainable development of the aquaculture sector in Scotland and beyond have received £2.2 million in funding.

Mandatory controls over the harvesting of wild wrasse for managing sea lice in Scotland's salmon farming industry are due to come into force next year.

Scottish salmon farmers have welcomed a new consultation on the merits of introducing legally binding rules to control the harvesting of wrasse for use as cleaner fish.

New research suggests that cleaner fish are nine times less effective at removing sea lice from salmon in pens surrounded by lice skirts, possibly due to the increased depth the salmon swim at in such pens.

Farmed mussels are showing promising results as a feed for wrasse used as cleaner fish in the fight against sea lice in the salmon aquaculture sector.

A cohort study of commercial salmon farms in Norway explores different prevention and treatment strategies for salmon lice and finds that habituated cleaner fish can keep lice at bay despite fluctuations in temperature a…

Two of Scotland’s leading fish farming companies have helped to close the cycle of ballan wrasse – successfully breeding from farm-raised broodstock.

A new film by Scottish Sea Farms illustrates the development of the use of wrasse to pick parasites off salmon in marine pens.

Marine Harvest’s plan for building a new wrasse hatchery on the Kintyre peninsula has been unanimously approved by Argyll & Bute Council.

Eirik Sigstadstø, R&D director at the Norwegian Research Fund (FHF), has high hopes for next week’s sea louse control conference in Trondheim, in which the use of lumpfish and wrasse are set to be high on the agenda.…