He said that seeing them confirms that the annual fish migration was still robust despite all the pressures facing the environment along the Mekong.
Mekong catfish, huge and rare, spotted in Cambodia, raising conservation hopes
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More than 700 dams are built along the river and its tributaries and there are very few functional “fish passages” to help species navigate obstructions, said Brian Eyler, director of the Southeast Asia Program at the Stimson Center in Washington, who was not involved in the research.
Giant salmon carp, huge fish thought to be extinct, is spotted in the Mekong River
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