Big Amu Darya Shovelnose Sturgeon (Pseudoscaphirhynchus kaufmanni)
Small narrow snout (dwarf) form
https://life-on-earth.ru/amu-darya-and-syr-darya-shovelnose-sturgeons/amu-darya-shovelnose-sturgeons-pseudoscaphirhynchus-nukus-balyk-hatchery-brood-stock-data-base/2-uncategorised/113-pseudoscaphirhynchus-kaufmanni-nukus-balyk-hatchery-brood-stock-inaturalist-253566990-chip-401871#sigProId86778730dc
25.11.2024
https://life-on-earth.ru/amu-darya-and-syr-darya-shovelnose-sturgeons/amu-darya-shovelnose-sturgeons-pseudoscaphirhynchus-nukus-balyk-hatchery-brood-stock-data-base/2-uncategorised/113-pseudoscaphirhynchus-kaufmanni-nukus-balyk-hatchery-brood-stock-inaturalist-253566990-chip-401871#sigProId8955d5c4cf
04.04.2026
iNaturalist link:
https://www.inaturalist.org/observations/253566990
Microchip implant 900263000-401871
Implanted 10.04.2025
Origin:The Amu Darya river, town of Khanka area (Khorezm province, Uzbekistan); 23.11.2024; weight 67,4 g
The weight data may not be correct before 04.04.2026 due to scales lapse that were not properly checked.
Ultra sound screening with AcuVista VT880a portable water proof ultra sound scanner:
Date: 10.04.2025
Result: female, maturity stage II-III (the lower gonad was observed); tiny eggs
Weight on 10.04,2025 - 63,2 g
Date: 04.04.2026
Result: female, the second stage of maturity-beginning, fat (adipose)
Weight on 04.04.2026 - 77 g
https://life-on-earth.ru/amu-darya-and-syr-darya-shovelnose-sturgeons/amu-darya-shovelnose-sturgeons-pseudoscaphirhynchus-nukus-balyk-hatchery-brood-stock-data-base/2-uncategorised/113-pseudoscaphirhynchus-kaufmanni-nukus-balyk-hatchery-brood-stock-inaturalist-253566990-chip-401871#sigProIdf41b062ddb
Examining the fish on 04.04.2026
Videos of ultra sound screening on 04.04.2026:
Videos of ultra sound screening on 10.04.2025: