Acipenser baerii

  • 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

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