Its mouth is located toward bottom of its face. The freshwater drum is a rounded fish with a small tail and a silvery cast to its scales. It is a large, round-profiled, silver humpbacked fish. Local residents nicknamed the stingray "Boramy,” or “full moon,” because of its round shape and because the moon was on the horizon when it was freed on June 14. The freshwater drum is known for the rumbling and grunting sounds the males make to attract mates. They think this may be a spawning hotspot for the species. Researchers say it’s the fourth giant stingray reported in the same area in the past two months, all of them females. We don’t know about its ecology, about its migration patters.” “It’s found throughout Southeast Asia, but we have almost no information about it. Its name, even its scientific name, has changed several times in the last 20 years,” Hogan said. “The giant stingray is a very poorly understood fish. The largest Gar is the Alligator Gar which can reach 10 feet and weigh 200 pounds and is the largest freshwater fish in North America. The device will send tracking information for the next year, providing unprecedented data on giant stingray behavior in Cambodia. The team that rushed to the site inserted a tagging device near the tail of the mighty fish before releasing it. So about 70% of giant freshwater fish globally are threatened with extinction, and all of the Mekong species.” They’re impacted by things like habitat fragmentation from dams, obviously impacted by overfishing. “A lot of these big fish are migratory, so they need large areas to survive. So if they’re fished before they mature, they don’t have a chance to reproduce,” Hogan said. In particular, scientists fear a major program of dam building in recent years may be seriously disrupting spawning grounds. It is home to several species of giant freshwater fish but environmental pressures are rising. The Mekong River runs through China, Myanmar, Laos, Thailand, Cambodia and Vietnam. “The fact that the fish can still get this big is a hopeful sign for the Mekong River, ” Hogan said, noting that the waterway faces many environmental challenges. The stingray's catch was not just about setting a new record, he said. government’s international development agency.įreshwater fish are defined as those that spend their entire lives in freshwater, as opposed to giant marine species such as bluefin tuna and marlin, or fish that migrate between fresh and saltwater like the huge beluga sturgeon. The university is partnering with the Cambodian Fisheries Administration and USAID, the U.S. “Yeah, when you see a fish this size, especially in freshwater, it is hard to comprehend, so I think all of our team was stunned,” Wonders of the Mekong leader Zeb Hogan said in an online interview from the University of Nevada in Reno.
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