4. Other Species
The Scottish aquaculture industry has continued to farm other species of fish during 2018. The production of brown trout (Salmo trutta) showed a decrease, with the majority of production being for the angling restocking market. In 2018 there was production of halibut (Hippoglossus hippoglossus) but the figure cannot be published without revealing the production from an individual company. No Arctic charr (Salvelinus alpinus) were produced during 2018. Lumpsucker (Cyclopterus lumpus) and several species of wrasse (Labridae) were also produced in 2018. The production of lumpsucker and wrasse are targeted at the marine Atlantic salmon industry where they are used as a biological control for parasites.
Company, Site and Production Data
Table 40: Number of companies and sites producing other species in 2018, annual production of other species (tonnes) during 2015-2018 and estimated production in 2019
|Species||No. of companies||No. of sites||2015
* Industry estimates based on stocks currently being on-grown.
† Production occurred but this cannot be shown without revealing the figure for an individual company.
‡ Estimate provided but cannot be shown without revealing the figure for an individual company.
Table 41: Number of staff employed in farming other species during 2009-2018
In 2018, the overall number of staff employed in the production of other species decreased by two, to 60 staff.
Production of Cleaner fish
Table 42: Number (000’s) of cleaner fish produced during 2015-2018
|Species||Number of fish produced (000’s)|
In recent years lumpsucker and wrasse spp. have been produced for use as a biological control for parasites in the marine Atlantic salmon industry. Data on the number of fish produced has only been collected since 2015. As data for future years is collected it will show trends in cleaner fish production.
Ova Laid Down to Hatch
Table 43: Source of ova from other species laid down to hatch during 2018
|Species||Source of ova laid down to hatch (000’s)|
|Own broodstock||Other GB broodstock||Foreign ova|
|Brown trout/sea trout||499||0||0|
Trade in Small Fish
Table 44: Trade in small fish of other species in 2018
|Species||Bought (000’s)||Sold (000’s)|
|Brown trout/sea trout||55||4|
# During 2018 there was trade of small halibut but figures cannot be shown without revealing the figure for an individual company.
There was also a small amount of production of brook charr (Salvelinus fontinalis) and tiger trout (Salmo trutta x Salvelinus fontinalis ). However, due to the small number of companies in production, it is not possible to summarise these data without revealing the production of individual companies.
Of the 24 sites recorded as producing other species in 2018, no organic production was reported.
There were no reported escapes from sites rearing other species during 2018.
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