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Article History

Received: 9 August 2017

Accepted: 28 February 2018

First Online: 6 March 2018

Ethics approval and consent to participate

: The fish were collected from a commercial hatchery (Marine Harvest Labrus, Rong, Norway), where ballan wrasse are reared in accordance with the Norwegian Animal Welfare Act of 12 December 1974, no. 73, §§22 and 30, amended 19 June 2009. The facility has a general permission to rear all developmental stages of Labrus berggylta, license number H ØN0038 provided by the Norwegian Directorate of fisheries ().Since fish were sampled from the production line and did not undergo any treatment or handling except for sampling a special approval from the food authorities and ethics committee is deemed unnecessary according to Norwegian regulations “Legislation on the use of animals” § 6 “Approval of study” (English translation)(/). § 6 states that need for approval does not apply for studies which only uses animals for their organ or tissue. All fish used for the transcriptomic study were euthanized with an overdose of metacaine (MS-222TM; Norsk medisinaldepot AS, Bergen Norway) on site, before tissues were harvested. Fish used for genome sequencing was killed by a blow to the head before tissues were harvested.

: Not applicable.

: The authors declare that they have no competing interests.

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