Page 0014

Health

RSPCA welfare standards for farmed Atlantic salmon 7 September 2015

* indicates an amendment

H 4.6 * The biological control of sea lice using cleaner fish such as Wrasse (Labridae spp.) and lumpsuckers

(Cyclopteridae spp.) is not permitted without permission from the RSPCA. Requests for permission to use

cleaner fish must be submitted in writing to the RSPCA Farm Animals Department.

The RSPCA is reviewing the ongoing wrasse trial results, in order to assess the feasibility of

introducing its draft wrasse standards into the main body of the document in the future.

*

The following areas of fish husbandry affecting the welfare of the fish are considered to be

important areas to develop within the standards for wrasse/cleaner fish:

 diets and supplementary feeding

 housing

 environment/enrichment

 health planning/disease control/vaccination

 hatchery management

 juvenile/ongrowing management

 transport

 humane killing

 re-use/culling of cleaner fish at the end of the cycle

 handling procedures

 measurable and meaningful welfare indicators for the various species

 growth rates

 optimal cleaner fish stocking densities/stocking density strategies - a level number

of fish in the cages versus a hit squad approach

 training sentinel fish to eat lice so that others learn from them.

H 4.7 * Sea lice damage to fish must be recorded during lice counts. This must include:

a) condition of fish - good/thin

b) site of lesions

c) skin condition

d) fish behaviour - lively/moribund.

H 4.7.1 * Any fish with severe physical damage caused by sea lice grazing must be removed and dispatched

humanely without delay.

Mutilations

H 5.1 Mutilations involving the removal of sensitive tissue are prohibited.

H 5.2 Marking methods that cause distress or injury to fish must not be used.

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