Discus vs Swordfish
Symphysodon discus so sánh với Xiphias gladius
Taxonomy & Classification
| Thuộc tính | Discus | Swordfish |
|---|---|---|
| Tên khoa học | Symphysodon discus | Xiphias gladius |
| Bộ | Cichliformes | Istiophoriformes |
| Họ | Cichlidae | Xiphiidae |
| Conservation Status | Least Concern | Least Concern |
Physical Traits
| Thuộc tính | Discus | Swordfish |
|---|---|---|
| Chiều dài tối đa | 20,0 cm | 455,0 cm |
| Cân nặng tối đa | 0,25 kg | 650,0 kg |
| Màu sắc | 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 brown to blackish-purple back contrasting sharply with a pale cream-white belly; sides are dull bronze-brown; large crescent-shaped tail fin is dark; skin scaleless and leathery. |
Habitat & Environment
| Thuộc tính | Discus | Swordfish |
|---|---|---|
| Loại nước | Freshwater | Saltwater |
| Phạm vi độ sâu | — | 0-2878m |
| Phân bố địa lý | 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 … | Cosmopolitan in temperate and tropical oceans worldwide, including the Mediterranean Sea, Atlantic, Indian, and Pacific oceans. Makes deep vertical migrations between surface feeding and depths … |
| Môi trường sống | 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. … | Oceanic and neritic zones worldwide in temperate and tropical seas; surface to 650m. Highly migratory, following prey into cold, productive upwelling zones. Rarely found near … |
Aquarium Suitability
| Thuộc tính | Discus | Swordfish |
|---|---|---|
| Kích thước bể tối thiểu | 250 L | — |
| Nhiệt độ | 26-30 | — |
| Phạm vi pH | 5.0-7.0 | — |
| Mức độ chăm sóc | Difficult | — |
| Tính cách | Peaceful | — |
Thông tin câu cá
| Thuộc tính | Discus | Swordfish |
|---|---|---|
| Cá thể thao | Không | Có |
| Xếp hạng chiến đấu | — | 9/10 |
| Kỷ lục thế giới | — | — |
| Hàm lượng thủy ngân | — | — |
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.
Swordfish
Dense, meaty flesh with a mild, slightly sweet flavor; moderate fat and steak-like texture. Ideal for grilling, broiling, or searing; pairs well with lemon-herb or citrus salsas.
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.
Swordfish
The swordfish is a highly migratory pelagic predator recognized by its long, flat, pointed bill. It can dive to depths exceeding 2,800 meters and possesses a specialized organ that heats its eyes and brain for improved vision in cold, deep water.