Giant Stingray as One World's Big Freshwater Fish - Freshwater Fish | The giant stingray is among the world's big freshwater fish, but it is also have it's own mystery. No body is sure just how many giant stingrays are left, on which habitats these big freshwater fish prefer to live, or even if they should ever venture straight into the ocean, and from where their relatives coming from.
These ancient big freshwater fish, little changed over many millions of years, can reach 16. 5 feet (5 meters ) long and weigh as much as 1, 320 pounds (600 kilograms ). They‘re brown to gray in color, wide and flat in form, and that they have whip like tail.
Giant stingrays have been shown to prowl river systems in Borneo, Thailand, northern Australia, and New Guinea. These big freshwater fish frequently bury themselves in sandy or silted river bottoms and breathe through holes, or spiracles, located on top of the bodies. Stingrays locate prey, usually clams and crabs, having a sensor which will detect an animal's electrical field.
giant stingray numbers appear to be dropped dramatically in recent years as these big freshwater fish riverine habitats have degraded, and it also appears they not inhabit some parts of the historical range. Large stingrays happen to be known to pull boats upstream as well as underwater.
Though Giant stingrays don‘t readily attack humans, these big freshwater fishes perhaps one of the few megafishes which will pose a genuine danger to people who handle them. Each ray sports a deadly barb on the bottom of their tail which will easily penetrate human skin as well as bone, just like a hunting arrow. This stinger could be so long as 15 inches (38 centimeters ) and they give toxins towards the victim's wound.
reference: http://environment.nationalgeographic.com
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