Oscar vs Zebra Danio
Astronotus ocellatus compared with Danio rerio
Taxonomy & Classification
| Attribute | Oscar | Zebra Danio |
|---|---|---|
| Scientific Name | Astronotus ocellatus | Danio rerio |
| Order | Cichliformes | Cypriniformes |
| Family | Cichlidae | Danionidae |
| Conservation Status | Least Concern | Least Concern |
Physical Traits
| Attribute | Oscar | Zebra Danio |
|---|---|---|
| Max Length | 45.0 cm | 5.0 cm |
| Max Weight | 1.6 kg | 0.001 kg |
| Color | Dark olive-brown to blackish body with irregular wavy orange-red markings forming a marbled or reticulated pattern; prominent black ocellus with orange ring at the upper tail base. | 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
| Attribute | Oscar | Zebra Danio |
|---|---|---|
| Water Type | Freshwater | Freshwater |
| Depth Range | — | — |
| Geographic Range | Native to the Amazon and Orinoco river basins in South America, including Peru, Colombia, and Brazil. Inhabits slow, deep, turbid rivers, flooded forests, and large … | 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 … |
| Habitat | Slow-moving rivers and floodplains of the Amazon and Orinoco basins, South America. Warm, murky water (22-28°C, pH 6-8). Inhabits areas with submerged logs and dense … | 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
| Attribute | Oscar | Zebra Danio |
|---|---|---|
| Min Tank Size | 280 L | 40 L |
| Temperature | 22-25 | 18-24 |
| pH Range | 6.0-8.0 | 6.0-8.0 |
| Care Level | Moderate | Easy |
| Temperament | Aggressive | Peaceful |
Fishing Information
| Attribute | Oscar | Zebra Danio |
|---|---|---|
| Game Fish | Yes | No |
| Fight Rating | — | — |
| World Record | — | — |
| Mercury Level | — | — |
Cuisine & Edibility
Oscar
Not consumed — popular ornamental cichlid kept for its bold patterning and personality; occasionally eaten in parts of South America but primarily an aquarium species.
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
Oscar
The oscar is a large, intelligent cichlid native to the Amazon basin. Known for its dog-like personality, it can recognize its owner and may beg for food. Oscars rearrange their tank decor and require spacious aquariums with robust filtration.
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.