How big does a silver arowana get?

In the wild it can reach up to about 1.2 m (4 ft) in length, though most individuals average closer to 0.9 m; aquarium specimens are usually smaller, around 50 cm.

Why is the silver arowana called the "water monkey"?

Because of its powerful jumping ability, which lets it leap out of the water to catch insects, spiders, and other prey resting on branches above the surface.

Do silver arowanas take care of their eggs?

Yes. Males are mouthbrooders that carry the fertilized eggs and newly hatched fry in their mouths for roughly six weeks until the young can survive on their own.

Silver Arowanaシルバーアロワナ

Osteoglossum bicirrhosumLC— Least Concern

The silver arowana is a large, primitive freshwater fish from the Amazon basin, prized in aquariums for its gleaming silver scales, upturned mouth, and startling ability to leap clear of the water to snatch insects from overhanging branches.

Silver Arowana (reference photo) — Photo: User:Qwertzy2 / CC BY-SA 3.0 / Source / cropped

Species Data

Classification: Osteoglossiformes / Osteoglossidae Source
Distribution: Native to South American river systems including the Amazon, Essequibo, and Oyapock basins, inhabiting both blackwater rivers and seasonally flooded forest. Source

Did You Know?

Males are mouthbrooders, carrying fertilized eggs and then the hatched fry in their mouths for about six weeks until the young are large enough to fend for themselves. Source
Arowanas are nicknamed the "water monkey" for their remarkable ability to leap from the water to snatch insects and other prey from branches above the surface. Source

Where to See This Species

2 facilities · 0 individuals

サンシャイン水族館 (Sanshain Suizokukan)Tokyo池袋駅（35番出口）からサンシャイン60通りを通って来館。

サンシャイン水族館のWikipedia記事に飼育種として記載 Source

高知県立のいち動物公園 (Kouchi Kenritsu Noichi Doubutsu Kouen)Kochi土佐くろしお鉄道ごめん・なはり線「のいち駅」から徒歩20分またはレンタサイクル13分。

高知県立のいち動物公園のWikipedia記事に飼育種として記載 Source

Conservation Story

Conservation Status

Osteoglossum bicirrhosumはIUCNでLCです。

Habitat

南米アマゾン川流域の河川、氾濫原、湖沼。

Threats

河川・氾濫原の改変
森林減少
観賞魚取引による採集圧

Conservation & Breeding Efforts

アマゾン流域の淡水環境保全
持続可能な飼育・流通への配慮

Sources

ja.wikipedia.org

Support Conservation

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FAQ

How big does a silver arowana get?: In the wild it can reach up to about 1.2 m (4 ft) in length, though most individuals average closer to 0.9 m; aquarium specimens are usually smaller, around 50 cm. Source
Why is the silver arowana called the "water monkey"?: Because of its powerful jumping ability, which lets it leap out of the water to catch insects, spiders, and other prey resting on branches above the surface. Source
Do silver arowanas take care of their eggs?: Yes. Males are mouthbrooders that carry the fertilized eggs and newly hatched fry in their mouths for roughly six weeks until the young can survive on their own. Source

Source: ja.wikipedia.org en.wikipedia.org