Discus vs Truite arc-en-ciel
Symphysodon discus comparé à Oncorhynchus mykiss
Taxonomy & Classification
| Attribut | Discus | Truite arc-en-ciel |
|---|---|---|
| Nom scientifique | Symphysodon discus | Oncorhynchus mykiss |
| Ordre | Cichliformes | Salmoniformes |
| Famille | Cichlidae | Salmonidae |
| Conservation Status | Least Concern | Least Concern |
Physical Traits
| Attribut | Discus | Truite arc-en-ciel |
|---|---|---|
| Longueur maximale | 20,0 cm | 120,0 cm |
| Poids maximum | 0,25 kg | 25,4 kg |
| Couleur | 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. | Steel-blue to olive-green back with a vivid iridescent pink-to-crimson lateral stripe, flanks densely speckled with small black spots across body and fins. |
Habitat & Environment
| Attribut | Discus | Truite arc-en-ciel |
|---|---|---|
| Type d'eau | Freshwater | Freshwater & Saltwater |
| Plage de profondeur | — | 0-200m |
| Aire de répartition | 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 … | Native to cold rivers and coastal waters of western North America from Alaska to northern Mexico. Anadromous steelhead run migrate between Pacific coastal rivers and … |
| Habitat | 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. … | Native to cool, clear rivers and streams of western North America; introduced worldwide. Prefers cold, oxygen-rich water (10-18°C) over gravel and cobble at 0-500m elevation. … |
Aquarium Suitability
| Attribut | Discus | Truite arc-en-ciel |
|---|---|---|
| Taille minimale de l'aquarium | 250 L | — |
| Température | 26-30 | — |
| Plage de pH | 5.0-7.0 | — |
| Niveau d'entretien | Difficult | — |
| Tempérament | Peaceful | — |
Informations sur la pêche
| Attribut | Discus | Truite arc-en-ciel |
|---|---|---|
| Poisson de pêche sportive | Non | Oui |
| Cote de combativité | — | 6/10 |
| Record du monde | — | — |
| Teneur en mercure | — | — |
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.
Truite arc-en-ciel
Delicate, mildly sweet flesh ranging from white to pink; low to moderate fat. Excellent pan-fried with butter, baked, or smoked; a top-tier freshwater table fish.
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.
Truite arc-en-ciel
The rainbow trout is native to cold-water tributaries of the Pacific Ocean in Asia and North America. Widely introduced worldwide, it is prized by anglers for its acrobatic leaps and beautiful coloration.