Arapaima vs European Sturgeon

Arapaima gigas との比較 Acipenser sturio

Taxonomy & Classification

属性	Arapaima	European Sturgeon
学名	Arapaima gigas	Acipenser sturio
目	Osteoglossiformes	Perciformes
科	Arapaimidae	Acipenseridae
Conservation Status	Data Deficient	Critically Endangered

Physical Traits

属性	Arapaima	European Sturgeon
最大体長	450.0 cm	600.0 cm
最大体重	200.0 kg	400.0 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.	Gray-brown to dark brownish-black back with 5 rows of bony scutes that are yellowish-white; sides pale grayish-brown to whitish; belly creamy-white; thick armored body with a shark-like heterocercal tail.

Habitat & Environment

属性	Arapaima	European Sturgeon
水質タイプ	Freshwater	Freshwater & Saltwater
生息水深	—	4-93m
分布域	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 …	Historically ranged across European coastal waters from the North Sea and Baltic to the Mediterranean and Black seas, spawning in major rivers like the Rhine, …
生息地	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. …	Neritic, estuaries

釣り情報

属性	Arapaima	European Sturgeon
ゲームフィッシュ	はい	いいえ
ファイト評価	10/10	—
世界記録	—	—
水銀含有量	—	—

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.

European Sturgeon

Critically Endangered — consumption is illegal throughout its range. Historically prized for its delicate flesh and black caviar; now one of the world's most threatened fish species.

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.

European Sturgeon

The European sturgeon is a critically endangered anadromous fish that can live over 100 years. Once abundant in European rivers, it is now restricted to a small population in the Gironde estuary. Its eggs are harvested as beluga-grade caviar.