Black Sea (FAO 37.4)
Net pens/ Cages
There is not much information on farmed beluga sturgeon, as there is a lack of transparency and a lot of cases regarding illegal fisheries and trading.
By farming the fish in cages, it indirectly affects the ecosystem via a concentrated waste stream originating from the cages. This fishery also has a well-known problem with escapees. If these escapees mix with fish from wild populations, reproductive successes may decrease. This species is also susceptible for disease, which could then spread considerably fast.
There are good regulations to protect the ecosystem and the wild populations of sturgeon against the negative impacts of aquaculture in the Black Sea. Although multiple incidents show that the enforcement of these regulations is not sufficient.
Fish in season
This is an assessment on farmed fish. Therefore season is not relevant.