It's time to see! Recently, Cambodian fishermen found a giant stingray in the Mekong River, which scientists have certified as the world's largest freshwater fish to date, with a length of 3.98 meters, a width of 2.2 meters and a weight of nearly 300 kilograms. But I look a bit like manta rays, are they one?
Curious, I consulted some information, and it turned out that they were close relatives, not a type of fish.
Manta ray (scientific name manta ray) belongs to the cartilaginous fish family, manta rays, it contains two genera, the anterior manta ray genus and manta ray genus. Its head is divided to the sides and has two ears-like things.
Stingrays generally refer to the red stingray, which is a genus of stingrays and stingrays. Its head is pointed and poisonous. A blink of an eye looks very similar to a devil fish, and a closer look can tell the difference between them.
Stingrays are powerful! It can live between seawater and fresh water at the same time. Interestingly, the sense of smell is very sensitive, and everything they do is identified by the sense of smell, for example, as long as the prey is close to them, it can be directly identified by the sense of smell, is it safe.
Stingrays are said to have made a huge contribution to human science, identifying crude oil. In marine areas, crude oil, whether developed or unexplored by humans, may release a portion of it in ocean water, but this is something that humans cannot recognize. However, after 48 hours of survival, stingrays will find that the stingray's olfactory function will fail or die, and experiments have shown that stingrays can recognize crude oil, so scientists call it a marine "environmental surveyor".
Stingrays are poisonous, but they are also edible after treatment. @Magic Ant #我要上头条!! #
