Discus vs European Sturgeon

Symphysodon discus comparado com Acipenser sturio

Taxonomy & Classification

Atributo	Discus	European Sturgeon
Nome Científico	Symphysodon discus	Acipenser sturio
Ordem	Cichliformes	Perciformes
Família	Cichlidae	Acipenseridae
Conservation Status	Least Concern	Critically Endangered

Physical Traits

Atributo	Discus	European Sturgeon
Comprimento Máximo	20,0 cm	600,0 cm
Peso Máximo	0,25 kg	400,0 kg
Cor	Deep-bodied disc shape with vibrant turquoise-blue wavy horizontal lines over a reddish-brown to orange-brown base; fins edged in vivid blue with red striping; wild forms show 9 dark vertical bars.	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

Atributo	Discus	European Sturgeon
Tipo de Água	Freshwater	Freshwater & Saltwater
Faixa de Profundidade	—	4-93m
Distribuição Geográfica	Restricted to the central Amazon River basin in Brazil, particularly around the confluence of the Rio Negro and Rio Solimões. Prefers warm, soft, highly acidic …	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, …
Habitat	Warm, blackwater rivers of the Amazon basin, particularly the Rio Negro and tributaries. Prefers soft, acidic water (pH 4.5-6.5, 26-31°C) with driftwood and minimal current. …	Neritic, estuaries

Aquarium Suitability

Atributo	Discus	European Sturgeon
Tamanho Mínimo do Aquário	250 L	—
Temperatura	26-30	—
Faixa de pH	5.0-7.0	—
Nível de Cuidado	Difficult	—
Temperamento	Peaceful	—

Cuisine & Edibility

Discus

Not consumed — a prized ornamental aquarium fish known as the 'king of the aquarium' for its disc-shaped body and brilliant colors.

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

Discus

The discus is often called the 'King of the Aquarium' for its disc-shaped body and stunning color patterns. Native to the Amazon floodplains, it requires warm, soft, acidic water and feeds its fry with a mucus secretion from its skin.

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.