• Scientist: ICAR- National Bureau of Fish Genetic Resources, Lucknow; 25.01.2000 to 24.01.2009
• Senior Scientist: ICAR- National Bureau of Fish Genetic Resources, Lucknow; 25.01.2009 to 24.01.2015
• Principal Scientist: ICAR- National Bureau of Fish Genetic Resources, Lucknow; 25.01.2015 to 01.01.2023 and 10.11.2023 to till date
• Head (Acting): ICAR- National Bureau of Fish Genetic Resources, Lucknow; 02.01.2023 to 09.11.2023

• Role, impact and potential of community-based organizations/local institutions and other stakeholders in conservation and co-management of fishery resources.
• Exploration of fish germplasm resources and traditional ecological knowledge of fisherfolks
• Exploration, assessment and integration of stakeholders’ perspectives on status of fish diversity, habitats, climatic vulnerability and ecosystem services of freshwater resources.

Current Research Projects:

• Assessment of climate change impact in the waterbodies of Uttar Pradesh and developing climate resilient strategies for sustainable fisheries management (PI).
• Fish diversity assessment of Ramsar wetlands of Uttar Pradesh by integrating ecological approaches and stakeholder perception under climate change scenario (Co-PI).
• Quantifying agrobiodiversity and ecosystem services in Godavari river basin landscape (Co-PI).

• Kumar, Vijay, Rejani Chandran*, Ganesan Kantharajan, Lalit Kumar Tyagi, Amit Singh Bisht, Rajeev K. Singh and Uttam Kumar Sarkar*, (2025). Assessing the Impact of Flash Flood on Aquatic Habitat and Fishery Ecosystem Services of the Transboundary River Teesta in India Using GIS and Remote Sensing Tools, Ecohydrology, https://doi.org/10.1002/eco.70059
• Sarkar, Uttam Kumar*, K. Kathirvelpandian, G. Kantharajan, L.K. Tyagi and W.S. Lakra (2024). The concept of “state fishes of India”: Current status, knowledge gaps, and strategic plans for conservation and sustainable utilization (2024). Journal of Fish Biology. https://doi.org/10.1111/jfb.15729.
• Katre, Nidhi, Arpita Sharma*, S.N. Ojha, Lalit Tyagi and Vinod Yadav (2024). Reservoir fisheries governance quality index: Development and validation. Ecological Indicators,158, 2024, 111562 https://doi.org/10.1016/ j.ecolind.2024.111562.
• Rejani C., Sangeeta Mandal, T.S. Mayekar, Amit Singh Bisht, Sanjay Kumar Singh and Lalit Kumar Tyagi*, 2022. Fish diversity and habitat ecology of Tel River, a tributary of Mahanadi River, India. J. Inland Fish. Soc. India. 2022 54 (1): 03-15
• Tyagi, L.K., R. Chandran*, S. Mandal, T.S. Mayekar, A.S. Bisht, S.K. Singh and Kuldeep K. Lal, 2021. A Checklist of Fishes of Mahanadi River, India. Journal of Indian Fisheries Association, 48(1): 1-11.

*Corresponding author

For complete list of publications, link to Google scholar profile

https://scholar.google.com/citations?hl=en&user=twV-F4MAAAAJ

• Awarded an International Fellowship by the Netherlands Government to attend a three weeks International Training Programme on Participatory Fisheries Management at the the Wageningen, Netherlands in 2008.
• Shanti Prasad Goel Award 2015 of the Society for Community Mobilization for Sustainable Development, New Delhi.
• Young Scientist Award 2014 of the Indian Society of Extension Education, New Delhi.