Common Goldfish vs Corydoras
Carassius auratus compared with Corydoras paleatus
Taxonomy & Classification
| Attribute | Common Goldfish | Corydoras |
|---|---|---|
| Scientific Name | Carassius auratus | Corydoras paleatus |
| Order | Cypriniformes | Siluriformes |
| Family | Cyprinidae | Callichthyidae |
| Conservation Status | Least Concern | Least Concern |
Physical Traits
| Attribute | Common Goldfish | Corydoras |
|---|---|---|
| Max Length | 45.0 cm | 7.0 cm |
| Max Weight | 2.0 kg | 0.005 kg |
| Color | Brilliant orange to deep golden-yellow body with a metallic sheen across all scales; domesticated forms range from white, yellow, and red to black and calico bicolor combinations. | Pale olive-gray to greenish body with irregular dark olive to black marbled blotches and spots; a broad dark blotch at the dorsal fin base; belly is cream to white; fins spotted or barred. |
Habitat & Environment
| Attribute | Common Goldfish | Corydoras |
|---|---|---|
| Water Type | Brackish | Freshwater |
| Depth Range | 0-20m | — |
| Geographic Range | Originates from rivers and lakes of eastern China and possibly Korea; domesticated for over 1,000 years. Wild relatives inhabit slow rivers, ponds, and slightly brackish … | Native to the La Plata River system and coastal rivers of southeastern Brazil, Uruguay, and northeastern Argentina. Inhabits shallow streams, flooded meadows, and sandy-bottomed lagoons … |
| Habitat | Ponds, lakes, slow rivers across East Asia; introduced worldwide. Tolerates wide temperature range (10-30°C) and turbid water. Prefers shallow, vegetated areas with soft substrates. Domestic … | Rivers and streams of the Río de la Plata basin in South America (Brazil, Argentina, Uruguay). Inhabits clear-water streams over sandy and muddy bottoms. Active … |
Aquarium Suitability
| Attribute | Common Goldfish | Corydoras |
|---|---|---|
| Min Tank Size | 150 L | 40 L |
| Temperature | 10-24 | 22-26 |
| pH Range | 6.0-8.0 | 6.0-8.0 |
| Care Level | Easy | Easy |
| Temperament | Peaceful | Peaceful |
Fishing Information
| Attribute | Common Goldfish | Corydoras |
|---|---|---|
| Game Fish | Yes | No |
| Fight Rating | — | — |
| World Record | — | — |
| Mercury Level | — | — |
Cuisine & Edibility
Common Goldfish
Not consumed — a classic ornamental aquarium and pond fish; its vivid color and hardy nature make it one of the world's most popular decorative species.
Corydoras
Not consumed — a small ornamental bottom-dwelling catfish beloved for its peaceful temperament and role as a substrate scavenger in community aquariums.
Species Overview
Common Goldfish
The goldfish was one of the first fish to be domesticated, with selective breeding in China dating back over 1,000 years. Despite common misconceptions, goldfish can live 10-15 years with proper care and require far more space than a small bowl.
Corydoras
The peppered corydoras is a peaceful bottom-dwelling catfish native to South American rivers. It uses its barbels to sift through substrate for food and should be kept in groups of six or more. It can gulp atmospheric air in low-oxygen conditions.