Translation. Region: Russian Federation –
Source: Rosneft – An important disclaimer is at the bottom of this article.
With Rosneft's support, the first stage of research into valuable fish species in the Yenisei River has been completed. Leading scientists from the Lomonosov Moscow State University Marine Research Center, the Murmansk Marine Biological Institute of the Russian Academy of Sciences, and the Company's Arctic Research Center participated in the expedition to the Taimyr Peninsula. The work was carried out as part of the company's Tamura corporate environmental program.
The Tamura project, which launched in 2024, aims to update information on the status of key animal species in the Far North. Scientists are studying the Kara subpopulation of polar bears, wild reindeer, and valuable bird and fish species in western Taimyr. The program will run until 2027.
The first phase of ichthyofauna research involved a comprehensive survey, including assessing the population status of the most valuable fish species and the environmental conditions of their habitats. Scientists covered more than 600 km of the Yenisei River estuary, including its most important and major tributaries—the Bolshaya Kheta, Pelyatka, Dudinka, Tanalau, and Muksunikha rivers.
Biological analysis of fish such as muksun, whitefish, Arctic omul, and vendace was conducted in the ship's laboratory. Scientists measured their weight and size and studied their feeding habits. The selection of study sites was based on an analysis of ichthyological and hydrobiological research from the last 90 years.
Further office processing of the samples is planned to obtain data on the age characteristics of the fish population in the Yenisei River estuary, as well as additional information on their feeding habits. Furthermore, specialists will conduct chemical analysis of water and bottom sediment samples from the fish habitats.
The second phase of fish research is planned for 2026. Scientists will assess the state of the region's ichthyofauna populations at various stages of their life cycle, including feeding and spawning. The research will also include a biological analysis of the Yenisei's most abundant and valuable fish species, such as muksun, broad whitefish, and nelma.
Rosneft places special emphasis on preserving biodiversity and is implementing the largest comprehensive Arctic exploration program since Soviet times. Over the past 13 years, nearly 60 expeditions have been conducted, during which scientists have studied the region's hydrometeorological, geological, and biological features. This has allowed them to collect a unique array of information on the Arctic's climate, natural environment, and wildlife.
Department of Information and Advertising of PJSC NK Rosneft October 13, 2025
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