Cobia vs Discus
Rachycentron canadum 与之比较 Symphysodon discus
Taxonomy & Classification
| 属性 | Cobia | Discus |
|---|---|---|
| 学名 | Rachycentron canadum | Symphysodon discus |
| 目 | Carangiformes | Cichliformes |
| 科 | Rachycentridae | Cichlidae |
| Conservation Status | Least Concern | Least Concern |
Physical Traits
| 属性 | Cobia | Discus |
|---|---|---|
| 最大体长 | 200.0 cm | 20.0 cm |
| 最大体重 | 68.0 kg | 0.25 kg |
| 体色 | Dark brown to black back with two pale white or silver lateral stripes flanking a dark brown mid-lateral band; belly cream-white; juveniles display more vivid black, white, and orange banding. | 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 | Cobia | Discus |
|---|---|---|
| 水质类型 | Saltwater | Freshwater |
| 栖息水深 | 0-1200m | — |
| 地理分布 | Worldwide in tropical and subtropical oceans, absent only from the eastern Pacific. Found in the Gulf of Mexico, Caribbean, Indo-Pacific, and off Australia; frequents open … | 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 … |
| 栖息地 | Pelagic, coral reefs, estuaries | 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 | Cobia | Discus |
|---|---|---|
| 最小水箱尺寸 | — | 250 L |
| 水温 | — | 26-30 |
| pH 范围 | — | 5.0-7.0 |
| 饲养难度 | — | Difficult |
| 性情 | — | Peaceful |
钓鱼信息
| 属性 | Cobia | Discus |
|---|---|---|
| 游钓鱼种 | 是 | 否 |
| 搏鱼评级 | 8/10 | — |
| 世界纪录 | — | — |
| 汞含量 | — | — |
Cuisine & Edibility
Cobia
Firm, moist white flesh with a mild, buttery flavor; moderate fat and large, clean flakes. Extremely versatile — excellent grilled, smoked, raw as sashimi, or used in ceviche.
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
Cobia
The cobia is a powerful pelagic fish that often follows large rays, sharks, and turtles. Its flattened head and elongated body resemble a shark. Excellent table fare with firm, white flesh, it is increasingly farmed in aquaculture.
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.