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Giant freshwater stingray

Urogymnus polylepis

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

Potreben je zdravnikLe redko smrtno nevarno, a po piku je potreben zdravnik.

Strupene ribe

PikiJe: Meso

Nevarnost za ljudi: ResnoPo piku je potreben zdravnik. Smrtni primeri so zelo redki.

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

Živi v

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

Azija

Domov

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

Dolžina

5 m (16 ft)1

Teža

300 kg do 600 kg (661 lb do 1323 lb)1

Največja hitrost

približno 30 km/h (19 mph)

Plavanje, groba ocena

Kaj je?

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

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

Kako jo prepoznaš

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

Pogosto zamenjujejo z: 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

Moč strupa

Piki

Strup pride ven skozi želo.

Kaj naredi njen strup, ko ugrizne ali piči?

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

Kako nevarna je za ljudi?

Nevarnost za ljudi: ResnoPo piku je potreben zdravnik. Smrtni primeri so zelo redki.

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

Če piči

Rano daj v vročo vodo, tako vročo, kot jo poškodovanec prenese, ne da bi se opekel (preizkusi jo s svojo roko), za 30 do 90 minut. Poišči zdravniško pomoč, še posebej pri kamnitih ribah in morskih bičih.

Vedno najprej pokliči številko za klic v sili (112, 000, 911). To so splošna navodila za prvo pomoč, ne zdravniški nasvet. Osnove prve pomoči

Ostani varen

Nikoli se ne dotikaj divje živali, je ne lovi in je ne draži, tudi če je majhna in tudi če je videti, kot da spi ali je mrtva.
Pusti ji prostor. Če jo srečaš, ostani miren, počasi stopi nazaj in jo pusti, da gre svojo pot.
Če te piči: ostani miren, ne premikaj se, pokliči številko za klic v sili (112, 000, 911) ali hitro pojdi v bolnišnico. Zapomni si, kako je izgledala, fotografija pomaga.

Ne preži nate. Strup uporablja, da ulovi hrano ali se zaščiti, in se veliko raje skrije. Več o varnosti

Kje na svetu?

Afrika Azija Evropa Severna Amerika Južna Amerika Avstralija in Oceanija

Kako velika je?

Kako dolga je?

Koliko tehta?

težka kot 30 psov

dolga kot 5 psov od nosu do repadolga kot 28 banan, položenih ena za drugozmore preplavati dolžino velikega bazena (50 m) v 6 sekundah

Kakšne velikosti je Giant freshwater stingray v primerjavi s TABO?

Samo matematika v tvojem brskalniku. Nič se ne shrani in nič se nikamor ne pošlje.

Kako hitra je?

Olimpijski plavalec približno 8 km/h (5 mph)

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

Delfin s polno hitrostjo približno 35 km/h (22 mph)

vredno vedeti

Dejstva

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

Za strokovnjake za strupe

Znanstveno ime: Urogymnus polylepis
Skupina: Strupene ribe
Družina: Dasyatidae2
Red: Myliobatiformes
Celine: Azija
Mladiči: It gives birth to live young. Females have litters of one to four pups, each about 30 cm across at birth.1
Kako ji gre v naravi: Endangered (IUCN overall); Critically Endangered in Thailand1
Nevarnost za ljudi: 3 / 5: Resno3

Od kod so dejstva

Giant freshwater stingray (Wikipedia (CC BY-SA 4.0))
Urogymnus polylepis (iNaturalist): imena in razvrstitev.
Venom Wiki: stopnja nevarnosti, tipična velikost in ocena hitrosti so naše lastne. Poglej, kako jih določimo: Kako ocenjujemo nevarnost.

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