Discus vs Great Hammerhead Shark
Symphysodon discus مقارنةً بـ Sphyrna mokarran
Taxonomy & Classification
| السمة | Discus | Great Hammerhead Shark |
|---|---|---|
| الاسم العلمي | Symphysodon discus | Sphyrna mokarran |
| الرتبة | Cichliformes | Carcharhiniformes |
| الفصيلة | Cichlidae | Sphyrnidae |
| Conservation Status | Least Concern | Critically Endangered |
Physical Traits
| السمة | Discus | Great Hammerhead Shark |
|---|---|---|
| الطول الأقصى | 20,0 cm | 610,0 cm |
| الوزن الأقصى | 0,25 kg | 580,0 kg |
| اللون | 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. | Brownish-gray to olive-gray dorsal surface with a clean countershaded white belly; no distinct patterning; first dorsal fin is tall and strongly falcate; pelvic fin tips dusky. |
Habitat & Environment
| السمة | Discus | Great Hammerhead Shark |
|---|---|---|
| نوع الماء | Freshwater | Saltwater |
| نطاق العمق | — | 1-300m |
| النطاق الجغرافي | 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 … | Circumtropical in warm coastal and offshore waters of the Atlantic, Indian, and Pacific oceans. Concentrates around coral reefs, continental shelf edges, and deep-water drop-offs; population … |
| الموطن | 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. … | Neritic |
Aquarium Suitability
| السمة | Discus | Great Hammerhead Shark |
|---|---|---|
| الحد الأدنى لحجم الحوض | 250 L | — |
| درجة الحرارة | 26-30 | — |
| نطاق الرقم الهيدروجيني | 5.0-7.0 | — |
| مستوى الرعاية | Difficult | — |
| المزاج | Peaceful | — |
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.
Great Hammerhead Shark
Critically Endangered — consumption strongly discouraged. Fins are historically traded but the species faces severe population decline; eating this fish is ecologically irresponsible.
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.
Great Hammerhead Shark
The great hammerhead is the largest of the nine hammerhead shark species. Its distinctive cephalofoil (hammer-shaped head) houses an array of electroreceptors that allow it to detect stingrays buried beneath the sand.