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Giant freshwater stingray

Urogymnus polylepis

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

Perlu jumpa doktorJarang membawa maut, tetapi sengatannya perlu dirawat doktor.

Ikan berbisa

SengatanMakan: Daging

Bahaya kepada manusia: SeriusSengatannya perlu dirawat doktor. Kematian sangat jarang berlaku.

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

Hidup di

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

Asia

Laman utama

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

Panjang

5 m (16 ft)1

Berat

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

Kelajuan maksimum

kira-kira 30 km/j (19 mph)

Berenang, anggaran kasar

Apa yang ia makan?

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

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

Cara mengenalinya

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

Sering dikelirukan dengan: 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

Kuasa bisa

Sengatan

Bisa keluar melalui penyengat.

Apa kesan bisanya?

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

Berapa bahaya ia kepada manusia?

Bahaya kepada manusia: SeriusSengatannya perlu dirawat doktor. Kematian sangat jarang berlaku.

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

Jika ia menyengat

Rendam luka dalam air panas, sepanas yang orang itu boleh tahan tanpa melecur (uji dengan tangan kamu sendiri), selama 30 hingga 90 minit. Dapatkan bantuan perubatan, terutamanya untuk ikan batu dan ikan pari.

Sentiasa hubungi nombor kecemasan dahulu (112, 000, 911). Ini panduan pertolongan cemas umum, bukan nasihat perubatan. Asas pertolongan cemas

Kekal selamat

Jangan sesekali sentuh, tangkap atau usik haiwan liar, walaupun yang kecil, dan walaupun ia nampak tidur atau mati.
Beri ia ruang. Jika kamu terjumpa, bertenang, undur perlahan-lahan dan biarkan ia pergi.
Jika ia menyengat kamu: bertenang, jangan bergerak, hubungi nombor kecemasan (112, 000, 911) atau pergi ke hospital dengan segera. Ingat rupanya, gambar boleh membantu.

Ia bukan mahu memburu kamu. Ia guna bisanya untuk menangkap makanan atau melindungi diri, dan ia lebih suka bersembunyi. Lagi tentang keselamatan

Di mana di dunia?

Afrika Asia Eropah Amerika Utara Amerika Selatan Australia & Oceania

Berapa besar ia?

Berapa panjang ia?

Berapa berat ia?

seberat 30 ekor anjing

sepanjang 5 ekor anjing dari hidung ke ekorsepanjang 28 biji pisang disusun hujung ke hujungboleh berenang sepanjang kolam renang besar (50 m) dalam 6 saat

Berapa besar Giant freshwater stingray berbanding KAMU?

Hanya matematik dalam pelayar kamu. Tiada apa yang disimpan atau dihantar ke mana-mana.

Berapa laju ia?

Perenang Olimpik kira-kira 8 km/j (5 mph)

Giant freshwater stingray kira-kira 30 km/j (19 mph)

Ikan lumba-lumba pada kelajuan penuh kira-kira 35 km/j (22 mph)

berguna untuk diketahui

Fakta

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

Untuk pakar bisa

Nama saintifik: Urogymnus polylepis
Kumpulan: Ikan berbisa
Keluarga: Dasyatidae2
Susunan: Myliobatiformes
Benua-benua: Asia
Anak: It gives birth to live young. Females have litters of one to four pups, each about 30 cm across at birth.1
Keadaannya di alam liar: Endangered (IUCN overall); Critically Endangered in Thailand1
Bahaya kepada manusia: 3 / 5: Serius3

Dari mana fakta datang

Giant freshwater stingray (Wikipedia (CC BY-SA 4.0))
Urogymnus polylepis (iNaturalist): nama dan pengelasan.
Venom Wiki: tahap bahaya, saiz biasa dan anggaran kelajuan adalah penilaian kami sendiri. Lihat cara kami mengiranya: Cara kami menilai bahaya.

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