Arapaima vs Zebra Danio
Arapaima gigas 与之比较 Danio rerio
Taxonomy & Classification
| 属性 | Arapaima | Zebra Danio |
|---|---|---|
| 学名 | Arapaima gigas | Danio rerio |
| 目 | Osteoglossiformes | Cypriniformes |
| 科 | Arapaimidae | Danionidae |
| Conservation Status | Data Deficient | Least Concern |
Physical Traits
| 属性 | Arapaima | Zebra Danio |
|---|---|---|
| 最大体长 | 450.0 cm | 5.0 cm |
| 最大体重 | 200.0 kg | 0.001 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. | Silver to pale gold body with five continuous horizontal royal-blue stripes running from gill to tail tip, including through the fins; belly silvery-white; fins clear with blue-gold striping. |
Habitat & Environment
| 属性 | Arapaima | Zebra Danio |
|---|---|---|
| 水质类型 | Freshwater | Freshwater |
| 栖息水深 | — | — |
| 地理分布 | 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 … | Native to the Ganges and Brahmaputra river basins of Bangladesh, India, Nepal, and Myanmar. Inhabits fast-flowing hill streams, rice paddies, and shallow ponds across the … |
| 栖息地 | 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. … | Fast-flowing, clear mountain streams of the Ganges-Brahmaputra region, India and Bangladesh. Clean, well-oxygenated, shallow water with sandy and gravelly substrate (18-26°C). Lab model organism. |
Aquarium Suitability
| 属性 | Arapaima | Zebra Danio |
|---|---|---|
| 最小水箱尺寸 | — | 40 L |
| 水温 | — | 18-24 |
| pH 范围 | — | 6.0-8.0 |
| 饲养难度 | — | Easy |
| 性情 | — | Peaceful |
钓鱼信息
| 属性 | Arapaima | Zebra Danio |
|---|---|---|
| 游钓鱼种 | 是 | 否 |
| 搏鱼评级 | 10/10 | — |
| 世界纪录 | — | — |
| 汞含量 | — | — |
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.
Zebra Danio
Not consumed — a hardy ornamental aquarium fish notable for its horizontal blue-silver stripes and active schooling behavior; also a widely used laboratory model organism.
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.
Zebra Danio
The zebrafish is a small cyprinid native to South Asia's freshwater streams. Its distinctive blue-and-gold horizontal stripes and hardy nature make it a popular aquarium fish. It is also the most widely used vertebrate model organism in genetic research.