Arapaima vs Betta

Arapaima gigas 与之比较 Betta splendens

Taxonomy & Classification

属性	Arapaima	Betta
学名	Arapaima gigas	Betta splendens
目	Osteoglossiformes	Anabantiformes
科	Arapaimidae	Osphronemidae
Conservation Status	Data Deficient	Vulnerable

Physical Traits

属性	Arapaima	Betta
最大体长	450.0 cm	7.0 cm
最大体重	200.0 kg	0.003 kg
体色	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.	Highly variable in domesticated strains; wild type is dull brownish-green with iridescent blue-green scale patches; long flowing fins display intense reds, blues, purples, and teals with iridescent sheen.

Habitat & Environment

属性	Arapaima	Betta
水质类型	Freshwater	Freshwater
栖息水深	—	—
地理分布	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 Mekong River basin in Thailand, Laos, and Cambodia. Found in shallow rice paddies, irrigation ditches, ponds, and slow-moving lowland streams across the …
栖息地	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. …	Shallow, densely vegetated ponds, rice paddies, and slow streams of Thailand and Southeast Asia. Tolerates oxygen-poor, warm water (24-30°C). Males highly territorial; builds bubble nests …

Aquarium Suitability

属性	Arapaima	Betta
最小水箱尺寸	—	19 L
水温	—	24-30
pH 范围	—	6.5-7.5
饲养难度	—	Easy
性情	—	Aggressive

钓鱼信息

属性	Arapaima	Betta
游钓鱼种	是	否
搏鱼评级	10/10	—
世界纪录	—	—
汞含量	—	—

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.

Betta

Not consumed — ornamental aquarium species prized for its flowing fins and vibrant coloration; classified Vulnerable in the wild.

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.

Betta

The Siamese fighting fish is famous for its vibrant colors and flowing fins, developed through centuries of selective breeding. Males are highly territorial and will flare their gill covers at rivals. They possess a labyrinth organ for breathing atmospheric air.