# Commission Regulation (EC) No 429/2008 of 25 April 2008 on detailed rules for the implementation of Regulation (EC) No 1831/2003 of the European Parliament and of the Council as regards the preparation and the presentation of applications and the assessment and the authorisation of feed additives (Text with EEA relevance), Division 6: Table. Animal categories: Fish

Extent: E+W+S+N.I.

Category
Definition of the animal category
Approximate duration period (weight/age)
Minimum duration of long term studies for efficacy
Period
Age
Weight
Salmon and trout
200-300 g
90 days or until initial body weight is doubled.
Salmon and trout
Brood stock
As close to the spawning period as possible
90 days

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Source: https://www.legislation.gov.uk/eur/2008/429/annex/IV/division/6 (the official version)
Page: https://openlegislation.uk/eu-regulation-2008-429/annex-IV/division-6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.