What the fish 2021?

On an amateur filming, a fish was filmed, but I can’t figure out which one, please tell me who knows what kind of fish it is splashing in the Danube River. There is a suspicion that this is a sturgeon, sterlet, stellate sturgeon, beluga or thorn. 💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲💲 ◇ DONATION ◇ Send thanks to the author: 💲 BNB: 0x31a4e542e3f579198be301d362a6fbb144ad43bd 💲 BTC: 1DfhrkwVQGdGMxFRtQjEuZcewLi3BoXBbn 💲 ETH: 0x31a4e542e3f579198be301d362a6fbb144ad43bd 💲 Monobank: