Arapaima vs Discus

Arapaima gigas との比較 Symphysodon discus

Taxonomy & Classification

属性	Arapaima	Discus
学名	Arapaima gigas	Symphysodon discus
目	Osteoglossiformes	Cichliformes
科	Arapaimidae	Cichlidae
Conservation Status	Data Deficient	Least Concern

Physical Traits

属性	Arapaima	Discus
最大体長	450.0 cm	20.0 cm
最大体重	200.0 kg	0.25 kg
体色	Dark olive-gray to grayish-black back with large scales that become vivid red-orange with black borders on the posterior flanks; belly pale cream; caudal fin reddish and rounded.	Deep-bodied disc shape with vibrant turquoise-blue wavy horizontal lines over a reddish-brown to orange-brown base; fins edged in vivid blue with red striping; wild forms show 9 dark vertical bars.

Habitat & Environment

属性	Arapaima	Discus
水質タイプ	Freshwater	Freshwater
生息水深	—	—
分布域	Restricted to the Amazon River basin in Brazil, Peru, Guyana, and Bolivia. Inhabits flooded várzea lakes, oxbows, and large river channels; surfaces frequently to breathe …	Restricted to the central Amazon River basin in Brazil, particularly around the confluence of the Rio Negro and Rio Solimões. Prefers warm, soft, highly acidic …
生息地	Floodplain lakes (várzea) and large river channels of the Amazon basin. Slow-moving, shallow, warm freshwater (26-30°C). An obligate air-breather; rises to surface to gulp air. …	Warm, blackwater rivers of the Amazon basin, particularly the Rio Negro and tributaries. Prefers soft, acidic water (pH 4.5-6.5, 26-31°C) with driftwood and minimal current. …

Aquarium Suitability

属性	Arapaima	Discus
最小水槽サイズ	—	250 L
水温	—	26-30
pH 範囲	—	5.0-7.0
飼育難易度	—	Difficult
気性	—	Peaceful

釣り情報

属性	Arapaima	Discus
ゲームフィッシュ	はい	いいえ
ファイト評価	10/10	—
世界記録	—	—
水銀含有量	—	—

Cuisine & Edibility

Arapaima

Large, firm white fillets with a mild, clean flavor and low fat; historically a staple protein in Amazonian communities. Often salted and dried; sustainable harvest is tightly regulated.

Discus

Not consumed — a prized ornamental aquarium fish known as the 'king of the aquarium' for its disc-shaped body and brilliant colors.

Species Overview

Arapaima

The arapaima is one of the largest freshwater fish in the world, reaching up to 4.5 meters. An obligate air-breather, it must surface every 10-20 minutes to gulp air. Its tongue is bony and used to crush prey against the roof of its mouth.

Discus

The discus is often called the 'King of the Aquarium' for its disc-shaped body and stunning color patterns. Native to the Amazon floodplains, it requires warm, soft, acidic water and feeds its fry with a mucus secretion from its skin.