BANGKOK (AP) — Scientists say the world’s largest recorded freshwater fish, a giant stingray, has been caught in the Mekong River in Cambodia. Wonders of the Mekong, a joint Cambodian-U.S. research project, says the stingray, captured a week ago, measured almost four meters (13 feet) from snout to tail and weighed slightly under 300 kilograms (660 pounds). The Mekong River runs through China, Myanmar, Laos, Thailand, Cambodia and Vietnam. It is home to several species of giant freshwater fish but environmental pressures are threatening their survival. A tagging device was implanted in the stingray before it was released back into the river to track its movements.