Discus vs European Eel
Symphysodon discus compared with Anguilla anguilla
Taxonomy & Classification
| Attribute | Discus | European Eel |
|---|---|---|
| Scientific Name | Symphysodon discus | Anguilla anguilla |
| Order | Cichliformes | Anguilliformes |
| Family | Cichlidae | Anguillidae |
| Conservation Status | Least Concern | Critically Endangered |
Physical Traits
| Attribute | Discus | European Eel |
|---|---|---|
| Max Length | 20.0 cm | 133.0 cm |
| Max Weight | 0.25 kg | 6.6 kg |
| Color | 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. | Yellow-olive to olive-brown back and sides in the freshwater 'yellow eel' phase; maturing 'silver eel' phase develops a dark gray-black back with a silvery-white belly and enlarged eyes. |
Habitat & Environment
| Attribute | Discus | European Eel |
|---|---|---|
| Water Type | Freshwater | Freshwater & Saltwater |
| Depth Range | — | 0-700m |
| Geographic Range | 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 … | Spawns in the Sargasso Sea and larvae drift to European and North African coasts on the Gulf Stream. Adults inhabit rivers, lakes, and coastal waters … |
| 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. … | Estuaries |
Aquarium Suitability
| Attribute | Discus | European Eel |
|---|---|---|
| Min Tank Size | 250 L | — |
| Temperature | 26-30 | — |
| pH Range | 5.0-7.0 | — |
| Care Level | Difficult | — |
| Temperament | Peaceful | — |
Fishing Information
| Attribute | Discus | European Eel |
|---|---|---|
| Game Fish | No | Yes |
| Fight Rating | — | — |
| World Record | — | — |
| Mercury Level | — | — |
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.
European Eel
Rich, fatty flesh with a distinctive earthy flavor; classically smoked, jellied (in Britain), or grilled kabayaki-style. Critically Endangered — consumption strongly discouraged; population down 90%.
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.
European Eel
The European eel undertakes one of nature's most remarkable migrations, traveling 5,000 km from European rivers to the Sargasso Sea to spawn and die. Despite centuries of study, its breeding grounds were only recently confirmed.