Nainital Lake Embarks on Ambitious Snow Trout Restoration Initiative
A significant conservation project has been launched in Nainital lake, focusing on the restoration of snow trout, a native fish species locally known as "Asela." This initiative is designed to revive indigenous fish populations and uphold the ecological equilibrium of the aquatic environment.
University-Led Effort to Reintroduce Native Species
The project is spearheaded by the department of zoology at DSB College of Kumaon University. On Thursday, a fish cage was installed in Nainital lake to rear snow trout fingerlings in a controlled natural setting. These fish were originally bred in the university's zoology laboratory, marking a crucial step in the restoration process.
Snow trout, a cold-water species indigenous to Himalayan water bodies, plays a vital role in maintaining aquatic ecosystems. According to botany professor Lalit Tewari, this fish helps control algal growth, ensures water quality, and prevents excessive moss formation, thereby supporting overall lake health.
Historical Context and Technological Advancements
Vice-chancellor Prof (Col) Diwan Singh Rawat highlighted that native fish species in Nainital lake had nearly vanished about two decades ago. In response, the university established a biofloc fisheries technology centre. Under the leadership of department head Prof H C S Bisht and his team, sustained efforts led to the development of an advanced aquaculture technique.
Prof Rawat explained that snow trout has been successfully cultured at the DSB campus using both traditional methods and biofloc technology. This innovative system enhances water quality and promotes fish growth through microbial processes. Two production cycles have been completed, with fish also being sold commercially, demonstrating the project's practical success.
Next Phase and Long-Term Goals
The project has now progressed to the reintroduction phase, where snow trout will be released into Nainital lake. Scientific monitoring of water quality and fish growth will be conducted by Prof Bisht's team to ensure the species' sustainable recovery.
The long-term objectives include reviving native fish populations and providing hands-on training in biofloc technology to students, fostering environmental stewardship and skill development. The initiative has garnered support from local authorities, including municipal council chairperson Saraswati Khetwal and executive officer Rohitash Sharma, underscoring community involvement in conservation efforts.
