Arapaima vs Dwarf Gourami
Arapaima gigas compared with Trichogaster lalius
Taxonomy & Classification
| Attribute | Arapaima | Dwarf Gourami |
|---|---|---|
| Scientific Name | Arapaima gigas | Trichogaster lalius |
| Order | Osteoglossiformes | Anabantiformes |
| Family | Arapaimidae | Osphronemidae |
| Conservation Status | Data Deficient | Least Concern |
Physical Traits
| Attribute | Arapaima | Dwarf Gourami |
|---|---|---|
| Max Length | 450.0 cm | 9.0 cm |
| Max Weight | 200.0 kg | 0.005 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. | Males show brilliant alternating diagonal red-orange and iridescent turquoise-blue stripes across the flanks; dorsal and anal fins have red and blue streaking; throat and belly vivid electric blue. |
Habitat & Environment
| Attribute | Arapaima | Dwarf Gourami |
|---|---|---|
| Water Type | Freshwater | Freshwater |
| Depth Range | — | — |
| 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 … | Native to the rivers and floodplains of West Bengal, Assam, Bangladesh, and parts of Pakistan. Found in densely vegetated slow streams, ponds, and flooded rice … |
| 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. … | Slow-moving rivers, ponds, and ditches of Bangladesh, India, and Pakistan. Shallow, warm, densely vegetated freshwater (22-28°C). Males highly territorial and build bubble nests among floating … |
Aquarium Suitability
| Attribute | Arapaima | Dwarf Gourami |
|---|---|---|
| Min Tank Size | — | 40 L |
| Temperature | — | 22-28 |
| pH Range | — | 6.0-7.5 |
| Care Level | — | Easy |
| Temperament | — | Peaceful |
Fishing Information
| Attribute | Arapaima | Dwarf Gourami |
|---|---|---|
| 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.
Dwarf Gourami
Not consumed — popular ornamental labyrinth fish treasured in freshwater aquariums for its vivid red-and-blue striped coloration and calm temperament.
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.
Dwarf Gourami
The dwarf gourami is a brightly colored labyrinth fish native to the slow-moving waters of South Asia. Males build elaborate bubble nests at the surface for spawning. Its pelvic fins have evolved into long, thread-like feelers used to sense the environment.