Arapaima vs Whale Shark
Arapaima gigas compared with Rhincodon typus
Taxonomy & Classification
| Attribute | Arapaima | Whale Shark |
|---|---|---|
| Scientific Name | Arapaima gigas | Rhincodon typus |
| Order | Osteoglossiformes | Orectolobiformes |
| Family | Arapaimidae | Rhincodontidae |
| Conservation Status | Data Deficient | Endangered |
Physical Traits
| Attribute | Arapaima | Whale Shark |
|---|---|---|
| Max Length | 450.0 cm | 1800.0 cm |
| Max Weight | 200.0 kg | 21500.0 kg |
| Color | Dark olive-gray to grayish-black back with large scales that become vivid red-orange with black borders on the posterior flanks; belly pale cream; caudal fin reddish and rounded. | Dark gray to blue-gray back covered with a distinctive checkerboard grid of pale white or cream spots and transverse stripes; belly white; the unique spot pattern is unique to each individual. |
Habitat & Environment
| Attribute | Arapaima | Whale Shark |
|---|---|---|
| Water Type | Freshwater | Saltwater |
| Depth Range | — | 0-1928m |
| Geographic Range | Restricted to the Amazon River basin in Brazil, Peru, Guyana, and Bolivia. Inhabits flooded várzea lakes, oxbows, and large river channels; surfaces frequently to breathe … | Pantropical in open oceanic and coastal waters between 30°N and 35°S. Aggregates seasonally at feeding sites including Ningaloo Reef in Western Australia, the Gulf of … |
| Habitat | Floodplain lakes (várzea) and large river channels of the Amazon basin. Slow-moving, shallow, warm freshwater (26-30°C). An obligate air-breather; rises to surface to gulp air. … | Neritic, coral reefs |
Fishing Information
| Attribute | Arapaima | Whale Shark |
|---|---|---|
| Game Fish | Yes | No |
| Fight Rating | 10/10 | — |
| World Record | — | — |
| Mercury Level | — | — |
Cuisine & Edibility
Arapaima
Large, firm white fillets with a mild, clean flavor and low fat; historically a staple protein in Amazonian communities. Often salted and dried; sustainable harvest is tightly regulated.
Whale Shark
Endangered species — consumption is strongly discouraged and illegal in many countries. Historically consumed in parts of Asia; now internationally protected under CITES Appendix II.
Species Overview
Arapaima
The arapaima is one of the largest freshwater fish in the world, reaching up to 4.5 meters. An obligate air-breather, it must surface every 10-20 minutes to gulp air. Its tongue is bony and used to crush prey against the roof of its mouth.
Whale Shark
The whale shark is the largest living fish species, reaching lengths of up to 18 meters. Despite its enormous size, it is a gentle filter feeder that consumes plankton, fish eggs, and small fish by swimming with its wide mouth open.