Discus vs Yellowfin Tuna
Symphysodon discus との比較 Thunnus albacares
Taxonomy & Classification
| 属性 | Discus | Yellowfin Tuna |
|---|---|---|
| 学名 | Symphysodon discus | Thunnus albacares |
| 目 | Cichliformes | Scombriformes |
| 科 | Cichlidae | Scombridae |
| Conservation Status | Least Concern | Least Concern |
Physical Traits
| 属性 | Discus | Yellowfin Tuna |
|---|---|---|
| 最大体長 | 20.0 cm | 239.0 cm |
| 最大体重 | 0.25 kg | 200.0 kg |
| 体色 | 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. | Dark metallic blue-black back contrasting with a silver-white belly; a golden-yellow lateral band runs mid-body; dorsal, anal, and finlets are bright canary yellow with black edges. |
Habitat & Environment
| 属性 | Discus | Yellowfin Tuna |
|---|---|---|
| 水質タイプ | Freshwater | Saltwater |
| 生息水深 | — | 1-1602m |
| 分布域 | 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 … | Pantropical, ranging across the Atlantic, Indian, and Pacific oceans between roughly 40°N and 35°S. Aggregates around seamounts, fish aggregating devices, and thermocline boundaries in pelagic … |
| 生息地 | 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. … | Pelagic, estuaries |
Aquarium Suitability
| 属性 | Discus | Yellowfin Tuna |
|---|---|---|
| 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 | Discus | Yellowfin Tuna |
|---|---|---|
| ゲームフィッシュ | いいえ | はい |
| ファイト評価 | — | 9/10 |
| 世界記録 | — | — |
| 水銀含有量 | — | — |
Cuisine & Edibility
Discus
Not consumed — a prized ornamental aquarium fish known as the 'king of the aquarium' for its disc-shaped body and brilliant colors.
Yellowfin Tuna
Lean, dense flesh with a clean, meaty flavor; prized for sashimi and poke. Excellent seared rare, grilled as steaks, or served raw; one of the most commercially valued tunas.
Species Overview
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.
Yellowfin Tuna
The yellowfin tuna is a pelagic predator found in tropical and subtropical oceans worldwide. Capable of speeds exceeding 75 km/h, it is prized both as a sport fish and for its high-quality sashimi-grade flesh.