Common Goldfish vs Discus

Carassius auratus comparado com Symphysodon discus

Taxonomy & Classification

Atributo	Common Goldfish	Discus
Nome Científico	Carassius auratus	Symphysodon discus
Ordem	Cypriniformes	Cichliformes
Família	Cyprinidae	Cichlidae
Conservation Status	Least Concern	Least Concern

Physical Traits

Atributo	Common Goldfish	Discus
Comprimento Máximo	45,0 cm	20,0 cm
Peso Máximo	2,0 kg	0,25 kg
Cor	Brilliant orange to deep golden-yellow body with a metallic sheen across all scales; domesticated forms range from white, yellow, and red to black and calico bicolor combinations.	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.

Habitat & Environment

Atributo	Common Goldfish	Discus
Tipo de Água	Brackish	Freshwater
Faixa de Profundidade	0-20m	—
Distribuição Geográfica	Originates from rivers and lakes of eastern China and possibly Korea; domesticated for over 1,000 years. Wild relatives inhabit slow rivers, ponds, and slightly brackish …	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 …
Habitat	Ponds, lakes, slow rivers across East Asia; introduced worldwide. Tolerates wide temperature range (10-30°C) and turbid water. Prefers shallow, vegetated areas with soft substrates. Domestic …	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. …

Aquarium Suitability

Atributo	Common Goldfish	Discus
Tamanho Mínimo do Aquário	150 L	250 L
Temperatura	10-24	26-30
Faixa de pH	6.0-8.0	5.0-7.0
Nível de Cuidado	Easy	Difficult
Temperamento	Peaceful	Peaceful

Informações de Pesca

Atributo	Common Goldfish	Discus
Peixe Esportivo	Sim	Não
Classificação de Resistência	—	—
Recorde Mundial	—	—
Nível de Mercúrio	—	—

Cuisine & Edibility

Common Goldfish

Not consumed — a classic ornamental aquarium and pond fish; its vivid color and hardy nature make it one of the world's most popular decorative species.

Discus

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

Species Overview

Common Goldfish

The goldfish was one of the first fish to be domesticated, with selective breeding in China dating back over 1,000 years. Despite common misconceptions, goldfish can live 10-15 years with proper care and require far more space than a small bowl.

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.