Atlantic Halibut vs Discus
Hippoglossus hippoglossus compared with Symphysodon discus
Taxonomy & Classification
| Attribute | Atlantic Halibut | Discus |
|---|---|---|
| Scientific Name | Hippoglossus hippoglossus | Symphysodon discus |
| Order | Pleuronectiformes | Cichliformes |
| Family | Pleuronectidae | Cichlidae |
| Conservation Status | Endangered | Least Concern |
Physical Traits
| Attribute | Atlantic Halibut | Discus |
|---|---|---|
| Max Length | 470.0 cm | 20.0 cm |
| Max Weight | 320.0 kg | 0.25 kg |
| Color | Eyed side is olive-brown to dark greenish-brown with mottled paler blotches providing camouflage; blind underside is pure white; lateral line distinctly arched over the pectoral fin. | 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. |
Habitat & Environment
| Attribute | Atlantic Halibut | Discus |
|---|---|---|
| Water Type | Saltwater | Freshwater |
| Depth Range | 50-2000m | — |
| Geographic Range | North Atlantic from Labrador and Greenland east to Iceland, Norway, the Barents Sea, and the British Isles. Found on sandy and gravel bottoms at depths … | 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 … |
| Habitat | Neritic | 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. … |
Aquarium Suitability
| Attribute | Atlantic Halibut | Discus |
|---|---|---|
| Min Tank Size | — | 250 L |
| Temperature | — | 26-30 |
| pH Range | — | 5.0-7.0 |
| Care Level | — | Difficult |
| Temperament | — | Peaceful |
Fishing Information
| Attribute | Atlantic Halibut | Discus |
|---|---|---|
| Game Fish | Yes | No |
| Fight Rating | 7/10 | — |
| World Record | — | — |
| Mercury Level | — | — |
Cuisine & Edibility
Atlantic Halibut
Firm, meaty white flesh with a mild, sweet flavor and very low fat. Endangered status — sustainable sourcing essential; superb pan-seared, poached in butter, or roasted with aromatics.
Discus
Not consumed — a prized ornamental aquarium fish known as the 'king of the aquarium' for its disc-shaped body and brilliant colors.
Species Overview
Atlantic Halibut
The Atlantic halibut is the largest flatfish in the world, capable of exceeding 300 kg. Both eyes are on the right side of its body. It is a slow-growing, long-lived species that has suffered severe overfishing.
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.