Rare 100 kg “Royal Fish” Released Back into Mekong

Cambodian fisheries officials have returned a giant “royal fish” weighing around 100 kilograms to the Mekong River after it was caught by local fishermen in Kampong Cham province. The female specimen, measuring 215 cm, was handed over to the Provincial Fisheries Administration for conservation, highlighting both the rarity and vulnerability of this species.

What is a “Royal Fish”?

In Cambodia, the term “royal fish” refers to the Mekong giant catfish (Pangasianodon gigas), one of the world’s largest freshwater fish. It is critically endangered and protected under the IUCN Red List. While the name might suggest sturgeon—often called “royal fish” in Europe—the Cambodian usage points to the Mekong giant catfish, a species deeply tied to the river’s ecology and cultural heritage.

Conservation and Cultural Significance

• The Mekong giant catfish can grow to over 300 kg, making it a symbol of the river’s biodiversity.
• Historically, catches of such fish were considered offerings to royalty, hence the name “royal fish.”
• Today, strict laws prohibit their sale or consumption, with conservation authorities working to protect dwindling populations.

The Recent Catch

Fisheries Officer Mak Setha confirmed that the fishermen who caught the specimen in Roka Koy commune were aware of the law and voluntarily handed it over. The fish was released back into the Mekong in Kong Meas district on Wednesday.

Wider Context

The Mekong giant catfish has become emblematic of the challenges facing Cambodia’s freshwater ecosystems. Overfishing, dam construction, and habitat loss have pushed the species to the brink. Conservation groups, including the Wonders of the Mekong project, have documented rare catches in recent years, describing them as “returns of royalty” to the river.

Why It Matters

Cambodia’s rivers support millions of livelihoods, and the survival of species like the giant catfish is critical for ecological balance. Each release is not only an act of conservation but also a reminder of the fragile state of the Mekong’s biodiversity.

-2025-12-28