Learn More . Most Sterlet grow to 36”/90cm in length, but Sturgeon can grow a lot bigger and pond owners have achieved lengths of five feet or more. This sturgeon inhabits rivers that flow into the following seas: Caspian, Black, Azov, Baltic, White, Barents, Kara, and inhabits both the Black and Caspian seas, and ascends rivers to a greater distance from the sea than any of the other sturgeons; thus, for instance, it is not uncommon in the Danube at Vienna, but specimens have been caught as high up as Regensburg and Ulm. It is more abundant in the rivers of Russia.

The Sterlet (Acipenser ruthenus) is probably the slowest growing and therefore the best species for the garden pond. They may require special food such as sterlet sticks, as they are unable to digest the vegetable proteins usually found in commercial fish foods. Their needs are quite simple requiring good oxygen supply and a specialised food (they cannot digest the plant based matter in most ornamental feeds). £63.99. Add to Basket. It 'only' grows to 1.2m in the wild but usually up to 1m in the average pond although individual specimens can vary in size, sometimes only reaching 60cm. Hozelock Pond Air Pump- 640 . In Ornamental Ponds: The Sterlet is one of the more common and arguably more suitable species for keeping in an ornamental pond. Tetra Pond Sterlet Sticks 5L (2400g) £33.49. £99.99. Store Finder . Add to Basket. A good fish for the beginner. As early as the 18th century attempts were made to introduce this valuable fish into Sweden an… Aquagarden Essentials Pond Vac . Sturgeons are some of the biggest fish in the world and the largest ever Beluga Sturgeon (of Caviar fame,) was 24ft long and weighed over 3000lbs. Sterlets require relatively large ponds with good water conditions, and may get entangled in plants such as blanketweed. Add to Basket.