Stingray, also known as red stingray, is a cartilaginous fish that lives in the ocean, but there are also freshwater stingrays in freshwater areas, and some freshwater stingrays are particularly large. Recently, in the Mekong River Basin, a Cambodian fisherman caught a huge stingray, with a nose-to-tail length of nearly 4 meters, a width of about 2 meters, and a weight of nearly 300 kilograms, making it one of the largest freshwater fish.
Cambodian fishermen found that this giant stingray fell into the net, with their own strength can not drag it closer, more than a dozen adults work together to pull it ashore, because the giant stingray is also dangerous, there is a tens of centimeters long with toxin spikes, people dragging bare-handed can easily be stabbed.
It is not conceivable that there are such giant stingrays in the freshwater basin, and it is very significant to find this giant stingray, because the Mekong River Basin is the largest international river in Southeast Asia, and the aquatic species such as fish are very rich, but due to overfishing, environmental pollution, saltwater invasion, etc., the ecology of the basin has been very fragile. Given the many environmental challenges currently facing the Mekong, the emergence and capture of giant freshwater stingrays indicates that the basin is starting to get better and is still suitable for fish survival.
Stingray is also an economic fish, but this giant stingray is very special, the big fish needs to be put back into the river to study the situation of its population in the basin, and finally installed trackers such as acoustic labels on the giant freshwater stingray to track and monitor the behavior and movement of this giant stingray, and record their population.
- Giant freshwater stingrays are also one of the native fish species
In the Mekong River Basin, there are many huge fish, such as more than 200 kilograms of giant catfish, more than 100 kilograms of giant Siamese carp, etc., the discovery of more than 300 kilograms of giant freshwater stingray, are one of the native fish in the basin, these giant freshwater fish, is also a key part of the ecosystem of the water, is an indicator of whether the health of the water is an indicator.
Stingray is a kind of spiny poisonous fish, stingray tail spine poisonous glands, containing highly toxic liquid, if people are stabbed, light pain, heavy death, etc., and giant freshwater stingray also has such characteristics, according to the introduction of stingray maximum body length can grow to more than 5 meters, its tail spines can be up to about 40 cm long, such spikes can stab a person.
This giant fish seems to be very dangerous, but because of the relatively small population, coupled with its relatively lazy, swimming speed is not very fast, they prefer to ambush hunting, bury themselves in the silt and sand at the bottom of the river, quietly waiting for the prey to send the door and then sneak attack, the giant freshwater stingray is not a fierce active predator.
- Stingrays have poisonous tail spines, and venom can be medicated
There are more species of stingrays, about 100 kinds, different sizes, some species weigh up to 65-70 kg, generally 5-8 kg, the population distribution is relatively wide, the Atlantic, Indian Ocean and Pacific Ocean are distributed in various sea areas, there are also population distribution in river basins.
Although stingrays are widely distributed, their populations are also included in the list of near-threatened species because stingray venom is poisonous and medicinal, and its venom is an amino acid and polypeptide protein. In addition, stingray is also an economic fish, delicious taste, is a common seafood dish on the table, so that the stingray population has been sharply reduced.
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