The Ob was once teeming with sturgeon, but more recently the 'Tsar Fish' has become an endangered species in the mighty river.
Environment groups estimate that legal catches amounted to 1,410 tons in the 1930s, but had plunged 128 times by 1997 due to over-fishing.
Now a major release of 4000 Siberian sturgeon fry was made in the Ob in a bid to gradually restore the fish.
In the presence of the governor of Novosibirsk region Vasily Yurchenko, it was the first release of big fry (100-150g) since 1990.
'Siberian sturgeon fry were raised in the incubation shop - Novosibirsk fish factory - which was established in 2009 for the reproduction of whitefish and sturgeon,' said the governor's press service.
The modern facility, the largest in the Ob basin, was a capacity of 250 million eggs which also includes white salmon and starlet.
The rare Amur tigress was saved from starvation more than a year ago after she was orphaned when poachers killed her mother.
Fewer bears in the Siberian region of Tomsk this year are waking from hibernation and hungrily raiding remote villages and towns scavenging for food.
Recent reports showed 89 wildfires in Siberia and 25 in the Russian Far East as a new season of damage to forests gets underway.
Lost and alone on the Pacific coast, the seals would die without the help of a unique seal sanctuary.
The Siberian Times keeps writing about the unique seals sanctuary organised by Lora Beloivan from Vladivostok.