The giant salmon carp, also known as the “Mekong ghost” fish, was believed to have gone extinct since 2005 until scientists rediscovered three individuals caught in Cambodian waters between 2020 and 2023. The discovery of these elusive fish reignites hope for the species’ survival. Two of the found giant salmon carp were caught in the Sesan River, a tributary to the Mekong River, where dams have disrupted fish migrations, including those of the giant salmon carp.
In their search for the giant salmon carp, scientists worked closely with fishing communities, receiving tips and photographs of the fish caught. It wasn’t until 2022 and 2023 that they were able to confirm the presence of the long-lost species. The giant salmon carp, with its distinctive hooked jaw and salmon-like body, can grow up to 1.3 meters long and weigh over 30 kilograms. While the future of these river giants remains uncertain due to dams, overfishing, and climate change, the rediscovery of the giant salmon carp provides hope for their conservation.
The discovery of the giant salmon carp outside its suspected historic range indicates that the species may be more widespread than previously believed. Cambodia has officially added the giant salmon carp to its protected species list as researchers hope the rediscovery will lead to increased efforts to safeguard the Mekong River’s fragile ecosystem. Zeb Hogan, a fish biologist at the University of Nevada, Reno, and coauthor of the study, emphasizes that protecting the Mekong’s biodiversity is crucial, not just for the sake of the salmon carp, but for preserving one of the most diverse ecosystems on Earth.
The Mekong River is home to various megafish species, including the Mekong giant catfish and giant freshwater stingray. However, the construction of dams throughout the Mekong system has disrupted these fish’s seasonal migrations, posing a threat to their survival. The protection of these river giants and the restoration of their migratory pathways are essential for maintaining the ecological balance of the Mekong River and ensuring the long-term survival of these iconic species.
The rediscovery of the giant salmon carp highlights the importance of community engagement in conservation efforts. By working closely with local fishing communities and authorities, scientists were able to locate and confirm the existence of the long-lost species. This collaborative approach not only contributes to scientific discoveries but also fosters a sense of stewardship among communities towards their local environment and its wildlife.
The resurgence of the giant salmon carp serves as a reminder of the resilience of nature and the importance of continuous monitoring and conservation efforts. By protecting the habitats and migratory routes of these megafish species, we can ensure their survival and preserve the rich biodiversity of the Mekong River for generations to come. The rediscovery of the giant salmon carp is a testament to the value of research, community involvement, and conservation initiatives in safeguarding endangered species and their habitats.
