Arapaima vs Corydoras

Arapaima gigas 与之比较 Corydoras paleatus

Taxonomy & Classification

属性	Arapaima	Corydoras
学名	Arapaima gigas	Corydoras paleatus
目	Osteoglossiformes	Siluriformes
科	Arapaimidae	Callichthyidae
Conservation Status	Data Deficient	Least Concern

Physical Traits

属性	Arapaima	Corydoras
最大体长	450.0 cm	7.0 cm
最大体重	200.0 kg	0.005 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.	Pale olive-gray to greenish body with irregular dark olive to black marbled blotches and spots; a broad dark blotch at the dorsal fin base; belly is cream to white; fins spotted or barred.

Habitat & Environment

属性	Arapaima	Corydoras
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 La Plata River system and coastal rivers of southeastern Brazil, Uruguay, and northeastern Argentina. Inhabits shallow streams, flooded meadows, and sandy-bottomed lagoons …
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. …	Rivers and streams of the Río de la Plata basin in South America (Brazil, Argentina, Uruguay). Inhabits clear-water streams over sandy and muddy bottoms. Active …

Aquarium Suitability

属性	Arapaima	Corydoras
最小水箱尺寸	—	40 L
水温	—	22-26
pH 范围	—	6.0-8.0
饲养难度	—	Easy
性情	—	Peaceful

钓鱼信息

属性	Arapaima	Corydoras
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.

Corydoras

Not consumed — a small ornamental bottom-dwelling catfish beloved for its peaceful temperament and role as a substrate scavenger in community aquariums.

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.

Corydoras

The peppered corydoras is a peaceful bottom-dwelling catfish native to South American rivers. It uses its barbels to sift through substrate for food and should be kept in groups of six or more. It can gulp atmospheric air in low-oxygen conditions.