Discus vs Yellowfin Tuna

Symphysodon discus comparado com Thunnus albacares

Taxonomy & Classification

Atributo	Discus	Yellowfin Tuna
Nome Científico	Symphysodon discus	Thunnus albacares
Ordem	Cichliformes	Scombriformes
Família	Cichlidae	Scombridae
Conservation Status	Least Concern	Least Concern

Physical Traits

Atributo	Discus	Yellowfin Tuna
Comprimento Máximo	20,0 cm	239,0 cm
Peso Máximo	0,25 kg	200,0 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.	Dark metallic blue-black back contrasting with a silver-white belly; a golden-yellow lateral band runs mid-body; dorsal, anal, and finlets are bright canary yellow with black edges.

Habitat & Environment

Atributo	Discus	Yellowfin Tuna
Tipo de Água	Freshwater	Saltwater
Faixa de Profundidade	—	1-1602m
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 …	Pantropical, ranging across the Atlantic, Indian, and Pacific oceans between roughly 40°N and 35°S. Aggregates around seamounts, fish aggregating devices, and thermocline boundaries in pelagic …
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. …	Pelagic, estuaries

Aquarium Suitability

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

Informações de Pesca

Atributo	Discus	Yellowfin Tuna
Peixe Esportivo	Não	Sim
Classificação de Resistência	—	9/10
Recorde Mundial	—	—
Nível de Mercúrio	—	—

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.

Yellowfin Tuna

Lean, dense flesh with a clean, meaty flavor; prized for sashimi and poke. Excellent seared rare, grilled as steaks, or served raw; one of the most commercially valued tunas.

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.

Yellowfin Tuna

The yellowfin tuna is a pelagic predator found in tropical and subtropical oceans worldwide. Capable of speeds exceeding 75 km/h, it is prized both as a sport fish and for its high-quality sashimi-grade flesh.