Acipenser baerii / Siberian sturgeon

Siberian sturgeon (Acipenser baerii)

Siberian stork Acipenser baerii

The Siberian sturgeon comes from the rivers of Siberia and Lake Baikal. It is divided into three subspecies; The Acipenser baerii baerii from the Ob River (Western Siberia), the Acipenser baerii baicalensis, which comes from Lake Baikal and the Acipenser baerii stenorhynchus, which is native to the eastern rivers of Siberia.

The sturgeon is not only a tasty food fish, but is also best known for producing caviar. The original Kavier comes from him. The production of the most valuable caviar, Almas, can take up to 30 years from rearing to harvesting.

Each female can then carry 5 to 20 kg of caviar. Cavier is now mainly produced in Russia and Iran. The sturgeon can live for over 60 years, reach a maximum length of 250 cm and weigh up to 210 kg. The sturgeon, like the salmon, is one of the so-called other fish ( potamodromes ). During their spawning period between the ages of 11 and 19, the females lay their eggs in the main current of the water, where the water flows at a speed of 1 to 4 meters per second.
Characteristics
Siberian sturgeon
Latin. Surname Acipenser baerii
Okay, family Acipenseriformes, Acipenseridae
Happen Siberia, Lake Baikal
Habitat Flowing water and lakes
Height Weight 200 - 250 cm / max. 210 kg
Life expectancy > 60 years
Stocking density maximum 30 kg / m 3  (1 (vol
temperatures 16 - 24 0 Celsius 
pH range 6.5 - 8.0 (show suitable plants)
oxygen at least 6.0 mg/l
Water hardness 2 - 25° dGH (dGH
NO2 (nitrite) max. 1 mg/l
NO3 (nitrate) max. 100 mg/l
growth 1-2 g / day at 250 Celsius
FCR 0.7 - 1.5
Fishing After the first spawning period, caviar can be harvested again in a cycle of 3 - 4 years using the Aquatir technology, in which the females survive and do not have to be slaughtered. Depending on your preference, the
animals can also be slaughtered for meat depending on their size.
food type Omnivore/Omnivore
Preferred Small crustaceans, insect larvae, mollusks, small fish
Certification no EU certification. However, there are a number of regulations and certificates for the production and quality of cavier.
ASC/organic seal unavailable
ASC requirements unavailable
Feed High quality dry mix feed from the Coppens International brand in pelleted form 3 - 10 mm in size. It contains 42% proteins,
18% fat, 1.8% crude fiber, 6% crude ash and 0.9% phosphorus. 1% of the fish's live weight is recommended for the daily food ration.

Context: 

Sources:
https://www.laprensalatina.com/the-sturgeon-caviar-farm-harvesting-roe-willing-fish/
https://www.researchgate/279581_Growth_food_conion_Siberian_Siberian _Acipenser_baeri_brandt_at_different_daily_feeding_rates https: //www.dehner .at/ratgeber/zoo-tipps/ratgeber-stoere/
http://www.sturgeon-web.co.uk/water-quality
https://www.aquafuture.de/pdf/fischer_teichwirt_1_2010.pdf
https://www .fischlexikon.eu/fischlexikon/fische-suche.php?fisch_id=0000000089

 

bd) Stocking densities according to regulations for organic aquaculture in the EU:

15 kg/m³ brook trout (Salvelinus fontinalis)
15 kg/m³ Coregonen (Whitefish Coregonus)
15 kg/m³ trout (Oncorhynchus, Trutta)
20 kg/m³ Arctic char (Salvelinus alpinus)
25 kg/m³ brown and rainbow trout
20 kg/m³ salmon: brown trout (Salmo trutta fario), lake trout (Salmo trutta lacustris), sea trout (Salmo trutta trutta), rainbow trout (Oncorhynchus mykiss)
10 kg/m³ milkfish (Chanos chanos)
10 kg/m³ tilapia (Oreochromis sp.)
10 kg/m³ Mekong catfish (Pangasius sp.)
 
Quote : The prerequisites are compliance with the ban on deterioration of water quality (2) (in accordance with
Directive 2000/60/EC European Water Framework Directives), as well as an oxygen saturation of at least 7 mg/L
and a minimum inflow rate of 3 seconds liters per t of fish. Under no circumstances should the animals show injuries (e.g. to the fins) that indicate that the stocking density is too high. Tropical freshwater fish (e.g. milkfish Chanos chanos, tilapia Oreochromis sp., Mekong catfish Pangasius sp.): the stocking density in ponds and net enclosures (pens, enclosures) must not exceed 10 kg/m3 as an upper limit. 
 
Stocking density regulation EU:  REGULATION (EC) No. 710/2009 OF THE COMMISSION of August 5, 2009
 https://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ :L:2009:204:0015:0034:DE:PDF
 
dGH values )  https://www.aquarium-guide.de
1) Naturland guidelines:  https://www.naturland.de/images/01_naturland/documents/Naturland-guidelines_Aquakultur.pdf 
ID: 576
Parent Category: Biology
Category: Fish
Also available:  German (Hochdeutsch)