Great Hammerhead Shark vs Wels Catfish
Sphyrna mokarran compared with Silurus glanis
Taxonomy & Classification
| Attribute | Great Hammerhead Shark | Wels Catfish |
|---|---|---|
| Scientific Name | Sphyrna mokarran | Silurus glanis |
| Order | Carcharhiniformes | Siluriformes |
| Family | Sphyrnidae | Siluridae |
| Conservation Status | Critically Endangered | Least Concern |
Physical Traits
| Attribute | Great Hammerhead Shark | Wels Catfish |
|---|---|---|
| Max Length | 610.0 cm | 500.0 cm |
| Max Weight | 580.0 kg | 300.0 kg |
| Color | 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. | Dark olive-green to slate-gray back with irregular mottled marbling of darker blotches; flanks grade to olive-yellow; scaleless smooth skin; belly pale cream to yellowish-white; head broad and flat. |
Habitat & Environment
| Attribute | Great Hammerhead Shark | Wels Catfish |
|---|---|---|
| Water Type | Saltwater | Brackish |
| Depth Range | 1-300m | 0-30m |
| Geographic Range | 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 … | Native to large river systems and lakes of central and eastern Europe from the Rhine basin east to the Caspian and Aral sea drainages. Introduced … |
| Habitat | Neritic | Large rivers, lakes, and reservoirs across Europe and Asia (Volga, Danube, Rhine, Ob). Inhabits deep, slow-moving freshwater with soft substrates. Tolerates turbid water (15-25°C). Highly … |
Fishing Information
| Attribute | Great Hammerhead Shark | Wels Catfish |
|---|---|---|
| Game Fish | No | Yes |
| Fight Rating | — | 9/10 |
| World Record | — | — |
| Mercury Level | — | — |
Cuisine & Edibility
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.
Wels Catfish
Fatty, soft flesh with a mild, slightly sweet flavor; quality improves from cold, clean water fish. Popular in Central European cuisines — commonly smoked, fried, or braised with vegetables.
Species Overview
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.
Wels Catfish
The wels catfish is the largest freshwater fish in Europe, capable of exceeding 5 meters. Found in large rivers and lakes across the continent, it has been documented beaching itself to catch pigeons. It can live over 80 years.