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Giant freshwater stingray

Urogymnus polylepis

Nípa orúkọ náà: The scientific name polylepis comes from the Greek words for 'many' and 'scales'.1

Ó nílò dókítàKì í sábà pani, ṣùgbọ́n ìtani nílò dókítà.

Ẹja olóró

ÌtaniOúnjẹ rẹ̀: Ẹran

Ewu fún ènìyàn: Ó le gan-anÌtani nílò dókítà. Ikú kò wọ́pọ̀ rárá.

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

Ó ń gbé ní

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

Éṣíà

Ilé

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

Gígùn

5 m (16 ft)1

Ìwúwo

300 kg sí 600 kg (661 lb sí 1323 lb)1

Ìyára gíga jùlọ

nǹkan bí 30 km/h (19 mph)

Lílúwẹ̀ẹ́, àfojúbù

Kí ni ó máa ń jẹ?

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

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

Bí o ṣe lè dá a mọ̀

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

A sábà máa ń ṣì í mọ̀ sí: 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

Agbára oró

Ìtani

Oró ń jáde láti inú ohun ìtani.

Kí ni oró rẹ̀ máa ń ṣe?

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

Báwo ló ṣe léwu tó fún ènìyàn?

Ewu fún ènìyàn: Ó le gan-anÌtani nílò dókítà. Ikú kò wọ́pọ̀ rárá.

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

Bí ó bá ta ni

Fi ọgbẹ́ náà sínú omi gbígbóná, tó gbóná tó bí ẹni náà ṣe lè fara dà á láìjóná (fi ọwọ́ ara rẹ dán an wò), fún ìṣẹ́jú 30 sí 90. Wá ìrànlọ́wọ́ ìṣègùn, pàápàá fún ẹja òkúta àti stingray.

Máa kọ́kọ́ pe nọ́ńbà pàjáwìrì rẹ nígbà gbogbo (112, 000, 911). Èyí jẹ́ ìtọ́sọ́nà ìtọ́jú àkọ́kọ́ gbogbogbò, kì í ṣe ìmọ̀ràn ìṣègùn. Ìpìlẹ̀ ìtọ́jú àkọ́kọ́

Wà láìléwu

Má ṣe fọwọ́ kan, mú tàbí yọ ẹranko igbó lẹ́nu láéláé, kódà bí ó bá kéré, kódà bí ó bá dà bí ẹni pé ó ń sùn tàbí ó ti kú.
Fún un ní àyè. Bí o bá pàdé ọ̀kan, farabalẹ̀, sẹ́yìn díẹ̀díẹ̀ kí o sì jẹ́ kí ó máa bá ọ̀nà rẹ̀ lọ.
Bí ọ̀kan bá ta ọ́: farabalẹ̀, má ṣe mira, pe nọ́ńbà pàjáwìrì rẹ (112, 000, 911) tàbí lọ sí ilé ìwòsàn kíákíá. Rántí bí ó ṣe rí, fọ́tò máa ń ṣèrànwọ́.

Kò wá ọ kiri láti ṣe ọ́ léṣe. Ó ń lo oró rẹ̀ láti mú oúnjẹ tàbí láti dáàbò bo ara rẹ̀, ó sì fẹ́ràn láti farapamọ́ jù. Sí i nípa wíwà láìléwu

Níbo ní ayé?

Áfíríkà Éṣíà Yúróòpù Àríwá Amẹ́ríkà Gúúsù Amẹ́ríkà Ọsirélíà àti Òṣéáníà

Báwo ló ṣe tóbi tó?

Báwo ló ṣe gùn tó?

Báwo ló ṣe wúwo tó?

ó wúwo tó ajá 30

ó gùn tó ajá 5 láti imú dé ìrùó gùn tó ọ̀gẹ̀dẹ̀ 28 tí a tò tẹ̀léralè lúwẹ̀ẹ́ gígùn adágún ìwẹ̀ ńlá (50 m) ní ìṣẹ́jú-àáyá 6

Báwo ni Giant freshwater stingray ṣe tóbi tó tí a bá fi wé ÌWỌ?

Ìṣirò nìkan nínú bráwúsà rẹ. A kò fi ohunkóhun pamọ́, a kò sì fi ránṣẹ́ sí ibikíbi.

Báwo ló ṣe yára tó?

Olùwẹ̀ Olympic nǹkan bí 8 km/h (5 mph)

Giant freshwater stingray nǹkan bí 30 km/h (19 mph)

Ẹja dolphin tó ń sá pẹ̀lú gbogbo agbára nǹkan bí 35 km/h (22 mph)

ó yẹ ní mímọ̀

Òtítọ́

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

Fún àwọn amòye oró

Orúkọ sáyẹ́ǹsì: Urogymnus polylepis
Ẹgbẹ́: Ẹja olóró
Ìdílé: Dasyatidae2
Ètò: Myliobatiformes
Àwọn kọ́ńtínẹ́ńtì: Éṣíà
Àwọn ọmọ: It gives birth to live young. Females have litters of one to four pups, each about 30 cm across at birth.1
Bí ó ṣe ń ṣe nínú igbó: Endangered (IUCN overall); Critically Endangered in Thailand1
Ewu fún ènìyàn: 3 / 5: Ó le gan-an3

Ibi tí àwọn òtítọ́ ti wá

Giant freshwater stingray (Wikipedia (CC BY-SA 4.0))
Urogymnus polylepis (iNaturalist): orúkọ àti ìpínsísọ̀rí.
Venom Wiki: ìpele ewu, ìtóbi déédé àti àfojúbù ìyára jẹ́ tiwa. Wo bí a ṣe ń ṣírò wọn: Bí a ṣe ń díwọ̀n ewu.

Gbogbo òtítọ́ ojú-ìwé yìí ní nọ́ńbà tó tọ́ka sí orísun rẹ̀. Bí a bá ṣe àṣìṣe, má bínú, olólùfẹ́ ẹranko ni wá, kì í ṣe ìwé ìròyìn sáyẹ́ǹsì. Sọ fún wa ní [email protected] a ó sì tún un ṣe.

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