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Giant freshwater stingray

Urogymnus polylepis

Ibyerekeye izina: The scientific name polylepis comes from the Greek words for 'many' and 'scales'.1

Bisaba mugangaNi gake yica, ariko guterwa urubori na yo bisaba kujya kwa muganga.

Amafi afite ubumara

Itera uruboriIrya: Inyama

Akaga ku bantu: IkomeyeGuterwa urubori na yo bisaba kujya kwa muganga. Abapfa ni bake cyane.

The giant freshwater stingray is a large ray that lives in big rivers and estuaries in Southeast Asia and Borneo. It is the widest freshwater fish in the world, and it is now endangered because of fishing and habitat loss. It has a long, whip-like tail with a sharp spine near the base.1

Iba muri

Large rivers and estuaries of Indochina (such as the Mekong and Chao Phraya) and Borneo1

Aziya

Ahabanza

It lives on the sandy or muddy bottom of large rivers and their estuaries. It is sometimes found near heavily populated urban areas, and individuals are often seen at the edge of the river.1

Uburebure

5 m (16 ft)1

Ibiro

300 kg kugeza kuri 600 kg (661 lb kugeza kuri 1323 lb)1

Umuvuduko wo hejuru

hafi 30 km/h (19 mph)

Koga, ikigereranyo cy'ugereranyije

Irya iki?

It eats small fishes and invertebrates such as crustaceans and molluscs that live on the bottom. It finds them using electroreceptors, which sense the weak electrical signals of living animals.1

Ifoto ya Giant freshwater stingray — Giant freshwater stingray. Ifoto: BEDO (Thailand). CC BY-SA 4.0, iNaturalist.

Uko wayimenya

Plain grayish brown on top, often with a yellowish or pinkish tint towards the fin edges1
White underside with broad dark bands on the rear edges of the pectoral and pelvic fins1
Thin, whip-like tail that is black behind the spine and has no fin folds1
Sharply pointed snout that projects beyond the disc1
A single serrated stinging spine on the upper tail near its base, up to 38 cm long1

Ikunze kwitiranywa na: Similar freshwater stingrays in South Asia, Southeast Asia and Australasia were once tentatively grouped with this species. Some of them, such as the Australian Urogymnus dalyensis, are now described as separate species.1

Imbaraga z'ubumara

Itera urubori

Ubumara busohokera mu rubori.

Ubumara bwayo bukora iki?

Its sting is sheathed in toxic mucus. The sting is capable of piercing bone.1

Iteje akaga kangana iki ku bantu?

Akaga ku bantu: IkomeyeGuterwa urubori na yo bisaba kujya kwa muganga. Abapfa ni bake cyane.

The giant freshwater stingray is not aggressive. Its sting is strong enough to pierce bone and is coated in toxic mucus, so it should be treated with care.1

Niba itera urubori

Shyira igikomere mu mazi ashyushye, ashyushye uko umuntu abyihanganira atiriwe ashya (bigerageze ukoresheje ukuboko kwawe), mu gihe cy'iminota 30 kugeza kuri 90. Shaka ubufasha bwa muganga, cyane cyane ku bya stonefish na stingray.

Buri gihe banza uhamagare nimero y'ubutabazi (112, 000, 911). Izi ni inama rusange z'ubutabazi bw'ibanze, si inama za muganga. Ibanze by'ubutabazi bw'ibanze

Irinde akaga

Ntuzigere ukora, ufata cyangwa ushotora inyamaswa yo mu gasozi, nubwo yaba ntoya, kandi nubwo yasa n'isinziriye cyangwa yapfuye.
Yihe umwanya. Niba uhuye n'imwe, tuza, usubire inyuma buhoro buhoro kandi uyireke yigendere.
Niba imwe igutereye urubori: tuza, ntunyeganyege, hamagara nimero y'ubutabazi (112, 000, 911) cyangwa ujye ku bitaro vuba. Ibuka uko yasaga, ifoto irafasha.

Ntigushakisha ngo ikugirire nabi. Ikoresha ubumara bwayo kugira ngo ifate ibyo kurya cyangwa yirinde, kandi ikunda cyane kwihisha. Ibindi ku kwirinda

Ni hehe ku isi?

Afurika Aziya Uburayi Amerika y'Amajyaruguru Amerika y'Amajyepfo Ositaraliya na Oseyaniya

Ingana gute?

Ireshya ite?

Iremera ibingana iki?

iremera nk'imbwa 30

ireshya n'imbwa 5 zikurikiranye kuva ku zuru kugeza ku murizoireshya n'imineke 28 ikurikiranyeyakoga uburebure bw'ikidendezi kinini (metero 50) mu masegonda 6

Giant freshwater stingray ingana ite ugereranyije NAWE?

Ni imibare gusa ikorerwa muri mudasobwa yawe. Nta kintu kibikwa cyangwa cyoherezwa ahandi.

Yihuta gute?

Umwogeyi wo mu mikino Olempike hafi 8 km/h (5 mph)

Giant freshwater stingray hafi 30 km/h (19 mph)

Dolufine yiruka uko ishoboye kose hafi 35 km/h (22 mph)

bikwiye kumenywa

Ibintu by'ukuri

In June 2022, a specimen caught in the Mekong River was reported as the largest strict freshwater fish ever documented, at about 300 kg.1

It is the widest freshwater fish in the world, growing up to 2.2 m across.1

Its tail spine is up to 38 cm long, the largest of any stingray species.1

Pups are nourished in the womb by a milk-like substance called histotroph, or 'uterine milk', made by the mother.1

In Cambodia, the average weight of a landed ray fell from 23.2 kg in 1980 to 6.9 kg in 2006.1

Ku bahanga mu by'ubumara

Izina rya siyansi: Urogymnus polylepis
Itsinda: Amafi afite ubumara
Umuryango: Dasyatidae2
Itsinda rinini (order): Myliobatiformes
Imigabane: Aziya
Abana bato: It gives birth to live young. Females have litters of one to four pups, each about 30 cm across at birth.1
Uko imeze mu gasozi: Endangered (IUCN overall); Critically Endangered in Thailand1
Akaga ku bantu: 3 / 5: Ikomeye3

Aho ibintu bivugwa bituruka

Giant freshwater stingray (Wikipedia (CC BY-SA 4.0))
Urogymnus polylepis (iNaturalist): amazina n'ibyiciro.
Venom Wiki: urwego rw'akaga, ingano isanzwe n'ikigereranyo cy'umuvuduko ni ibyacu bwite. Reba uko tubibara: Uko tugena akaga.

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