Titan Mekong stingray weighs in at 300-kilograms– as well as aids fix an enigma.
Blighted by dry spell and climate change, overfishing, pollution, as well as massive dam construction, the predicament of the Mekong River has actually been well-documented over the last 20 years. But Southeast Asia’s largest river system is still capable of producing the weird surprise or document catch.
Thanks to anglers working around Koh Preah island near Stung Treng in Cambodia’s northeast, researchers state they can lastly recognize the globe’s biggest freshwater fish– a 300-kilogram women stingray, named Boremei by residents, Khmer for “moon.”
Gauging four meters from nose to tail, the gigantic stingray damaged the previous record embeded in Thailand where a 293-kilogram Mekong titan catfish was found in 2005. That fish died before it could be sold to ecological teams as well as– instead sadly– was divided between villagers and also supposedly fed the neighborhood for a number of weeks.
The most recent catch, made on June 13, was luckier and more considerable on several fronts.
” In 20 years of investigating gigantic fish in rivers as well as lakes on 6 continents, this is the biggest freshwater fish that we’ve experienced or that’s been recorded anywhere worldwide,” stated Zeb Hogan, a biologist at the University of Nevada as well as head of the Wonders of the Mekong job.
” This is an absolutely impressive discovery, and justifies initiatives to better recognize the mysteries bordering this species and also the extraordinary stretch of river where it lives.”
Hurt Treng rests just below the Laos boundary and also Four Thousand Islands, where the ground rises and also the Mekong, at its top, thunders through waterfalls and also giant rock crevices, limiting fish movement.
In Between Stung Treng and Kratie to the south exists a 200 kilometer stretch of river, which is residence to a host of endangered and also uncommon species, as well as the discovery of Boremei likewise supplies some hope, offered it was announced on the heels of a grim report about the Mekong dolphin.
Simply 89 dolphins have been signed up in between Stung Treng and also Kratie and also fatalities via illegal fishing are outmatching the dolphin’s capacity to replicate, which can undermine initiatives to have these protected locations included in UNESCO’s World Natural Heritage List.
In 2020, the World Wildlife Fund reported scientists had discovered 224 brand-new varieties of plant and also vertebrate pets in the Greater Mekong region, covering Cambodia, Laos, Myanmar, Thailand, and Vietnam.
These species included 155 plants, 16 fish, 17 amphibians, 35 reptiles, as well as one animal, taking the overall variety of new types located in this region to 3,007, made given that 1997.
According to the University of Nevada, there are more than 30 varieties of freshwater fish that expand to more than two meters in size and also can evaluate more than 90 kgs, including air-breathing arapaima, alligator gar, and carp as large as grizzly bears.
It additionally notes that current research studies reveal that international populations of giant freshwater types have actually dropped by practically 90 percent in the past 4 decades, two times as much as the loss of vertebrate populations on land or in the oceans.
Boremei was launched back into the Mekong after it was fitted with an acoustic tag, allowing biologists to find out more concerning the stingray’s habits, the initial for a stingray caught in Cambodia.
Researchers claimed the stingray, among four sighted in recent months, showed up healthy and strong as it rapidly came down into the murky depths of the river.
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“This record fish highlights the vital link between individuals, fish, and also freshwater,” said Hogan. “Large fish are bellwethers of the health and wellness of freshwater communities worldwide– the fish are sending us a message as well as we require to pay attention to it.
“It is a signal to us to protect our rivers and lakes,” he stated.