第 1254 号，共 1 402 张

Discus ray

Paratrygon aiereba

需要看医生很少致命，但被蜇了要去看医生。

蜇伤吃：肉

The discus ray is a large freshwater stingray that lives in the Amazon river basin in South America. It has a flat, round body shaped like a lily pad, and it is one of the biggest rays in its family. It is a top predator in its river home.1

生活在

Amazon basin, South America1

南美洲

首页

A river stingray that lives in freshwater. Adults stay in relatively deep water in the main river channels and move into shallower water to feed at night. Young rays are found in shallow water at sandy beaches and in creeks.1

长度

1.6 m (5.2 ft)1

体重

110 kg (243 lb)1

最高速度

约 24 公里/小时（15 英里/小时）

游泳, 粗略估计

它吃什么？

It mainly feeds on fish, but also eats invertebrates such as insects and crustaceans. It moves into shallower water to feed at night.1

Discus ray的照片 — Discus ray。照片：Sergey.A [email protected] Israel。 CC BY 3.0, Wikimedia Commons.

怎样认出它

Disc shaped roughly like a lily pad, with a slightly concave (dipped) snout1
Brownish colour on top1
Dark vermiculated or reticulated pattern (worm-like or net-like markings) across the upper body1
Small eyes1
Adults can reach a disc width of 1.6 m1

毒液之力

蜇伤

毒液通过蜇刺出来。

它对人有多危险？

对人的危险: 严重被蜇了要去看医生。死亡非常罕见。

如果它蜇人

把伤口泡在热水里，水温以不烫伤为限、尽量热（先用你自己的手试一试），泡 30 到 90 分钟。去看医生，尤其是被石头鱼和魟鱼伤到时。

一定先拨打你的急救电话（112、000、911）。这里是一般急救指导，不是医疗建议。急救基础

注意安全

永远不要摸、抓或逗弄野生动物，即使是很小的，即使它看起来在睡觉或已经死了。
给它留出空间。如果遇到它，保持冷静，慢慢后退，让它走自己的路。
如果被它蜇了：保持冷静，保持不动，拨打你的急救电话（112、000、911）或尽快去医院。记住它长什么样，拍张照片会有帮助。

它不是冲着你来的。它用毒液捕猎或保护自己，而且它更愿意躲起来。更多安全知识

在世界哪里？

非洲亚洲欧洲北美洲南美洲澳大利亚和大洋洲

它有多大？

它有多长？

它有多重？

和 6 只狗一样重

和 3 只家猫鼻子接尾巴一样长和 9 根香蕉首尾相接一样长7.5 秒就能游完一个大泳池（50 米）

Discus ray和你比起来有多大？

只是在你的浏览器里算一算。什么都不会被保存或发送到任何地方。

它有多快？

一名奥运游泳选手 约 8 公里/小时 (5 mph)

Discus ray 约 24 公里/小时 (15 mph)

一只全速游的海豚 约 35 公里/小时 (22 mph)

值得了解

事实

It can weigh up to 110 kg.1

It is a top predator in its river habitat.1

The female carries her young for nine months and gives birth to an average of two.1

The discus ray is one of the largest species in its family of stingrays.1

Its disc is shaped roughly like a lily pad, which gives it its name.1

谣言粉碎机

谣言： Discus rays grow much larger than 1.6 m across.

真相： Reports of much larger individuals are unconfirmed and are considered highly questionable. Most individuals do not grow wider than 1.3 m across the disc.1

给毒液专家

学名: Paratrygon aiereba
类别: 有毒的鱼
家人: Potamotrygonidae2
排序: Myliobatiformes
大洲: 南美洲
宝宝: After a nine-month pregnancy, the female gives birth to an average of two young, each with a disc width of about 16 cm.1
对人的危险: 3 / 5: 严重3