Betta vs Corydoras
Betta splendens compared with Corydoras paleatus
Taxonomy & Classification
| Attribute | Betta | Corydoras |
|---|---|---|
| Scientific Name | Betta splendens | Corydoras paleatus |
| Order | Anabantiformes | Siluriformes |
| Family | Osphronemidae | Callichthyidae |
| Conservation Status | Vulnerable | Least Concern |
Physical Traits
| Attribute | Betta | Corydoras |
|---|---|---|
| Max Length | 7.0 cm | 7.0 cm |
| Max Weight | 0.003 kg | 0.005 kg |
| Color | Highly variable in domesticated strains; wild type is dull brownish-green with iridescent blue-green scale patches; long flowing fins display intense reds, blues, purples, and teals with iridescent sheen. | 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 | Betta | Corydoras |
|---|---|---|
| Water Type | Freshwater | Freshwater |
| Depth Range | — | — |
| Geographic Range | Native to the Mekong River basin in Thailand, Laos, and Cambodia. Found in shallow rice paddies, irrigation ditches, ponds, and slow-moving lowland streams across the … | 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 | Shallow, densely vegetated ponds, rice paddies, and slow streams of Thailand and Southeast Asia. Tolerates oxygen-poor, warm water (24-30°C). Males highly territorial; builds bubble nests … | 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 | Betta | Corydoras |
|---|---|---|
| Min Tank Size | 19 L | 40 L |
| Temperature | 24-30 | 22-26 |
| pH Range | 6.5-7.5 | 6.0-8.0 |
| Care Level | Easy | Easy |
| Temperament | Aggressive | Peaceful |
Cuisine & Edibility
Betta
Not consumed — ornamental aquarium species prized for its flowing fins and vibrant coloration; classified Vulnerable in the wild.
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
Betta
The Siamese fighting fish is famous for its vibrant colors and flowing fins, developed through centuries of selective breeding. Males are highly territorial and will flare their gill covers at rivals. They possess a labyrinth organ for breathing atmospheric air.
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.