Arawana (Osteoglossum bicirrhosum)

科: Osteoglossidae

Arawanaは南米のアマゾン河流域に原生する温和な肉食性の淡水魚（アロワナ科）。飼育難度は上級者向き程度です。

飼育条件

水温: 24–30 °C
pH: 6.5–7.5
GH硬度: 5–15 dGH
成魚の体長: 63–90 cm
最小水槽: 900 L
泳ぐ水層: Upper; surface-oriented
飼育難度: 上級
性格: Semi-aggressive; predatory — keep singly
原産地: 南美洲亚马逊河流域

種の概要

A Osteoglossidae species: Osteoglossum bicirrhosum lives upper; surface-oriented over clear streams, rivers and still waters. Semi-aggressive; predatory — keep singly. Adults reach 63–90 cm. In a community tank it pairs well with Gold carp, Indonesian snakehead.

原生環境

生息地: Clear streams, rivers and still waters
水流: Moderate flow
溶存酸素: Average oxygen needs

レイアウトと設備

底床: Smooth gravel and sand with open floor space
流木・石組: Driftwood, water-worn stones and shelters that mimic the native biotope
水草: Hardy plants on hardscape; keep the floor open

性格・餌・混泳

群泳性: Solitary, pairs or small groups
餌: Carnivore; quality prepared foods with variety; regular frozen or live foods
おすすめの混泳相手: Gold carp — Similar size and water needs
Indonesian snakehead — Similar size and water needs
Asian Snakehead — Similar size and water needs
混泳しないほうがいい相手: Fish under half its size — May be eaten
Small fish and shrimp — Live-prey size

繁殖と注意点

雌雄の違い: Males are typically slimmer and more intensely colored; females fuller-bodied
繁殖方法: Spawning; condition with rich foods and simulate seasonal changes

よくある質問

Arawanaは飼育しやすい？

上級者向き。特定の水質条件が必要。Semi-aggressive; predatory — keep singly。Solitary, pairs or small groups。

Arawanaの適水温と水質は？

24–30 °C を安定して維持。pH 6.5–7.5、GH 5–15 dGH。

Arawanaの大きさと水槽サイズは？

成魚 63–90 cm 前後。Upper; surface-orientedのため 900 L 以上の水槽を推奨。

Arawanaの餌は？

Carnivore; quality prepared foods with variety; regular frozen or live foods。1日2回の少量給餌が理想的。

Arawanaは混泳できる？

Semi-aggressive; predatory — keep singly。混泳の相手：Gold carp — Similar size and water needs, Indonesian snakehead — Similar size and water needs, Asian Snakehead — Similar size and water needs。Fish under half its size — May be eaten, Small fish and shrimp — Live-prey sizeは避ける。

Arawanaの原産地は？

南美洲亚马逊河流域のClear streams, rivers and still watersが生息地。

Arawanaは飛び出す？

飛び出す種。ふたをしっかり閉める。

Arawanaの繁殖は？

Spawning; condition with rich foods and simulate seasonal changes。Males are typically slimmer and more intensely colored; females fuller-bodied。