Atlantic Bluefin Tuna vs Wels Catfish

Thunnus thynnus comparado com Silurus glanis

Taxonomy & Classification

Atributo	Atlantic Bluefin Tuna	Wels Catfish
Nome Científico	Thunnus thynnus	Silurus glanis
Ordem	Scombriformes	Siluriformes
Família	Scombridae	Ictaluridae
Conservation Status	Least Concern	Least Concern

Physical Traits

Atributo	Atlantic Bluefin Tuna	Wels Catfish
Comprimento Máximo	458,0 cm	500,0 cm
Peso Máximo	680,0 kg	300,0 kg
Cor	Dark metallic blue-black back with a bright silvery-white lower belly; upper flanks show iridescent blue and green tones; short yellow finlets have black margins; second dorsal and pectoral fins dark.	Dark olive-green to slate-gray back with irregular mottled marbling of darker blotches; flanks grade to olive-yellow; scaleless smooth skin; belly pale cream to yellowish-white; head broad and flat.

Habitat & Environment

Atributo	Atlantic Bluefin Tuna	Wels Catfish
Tipo de Água	Saltwater	Brackish
Faixa de Profundidade	0-985m	0-30m
Distribuição Geográfica	North Atlantic Ocean from the Gulf of Mexico and Caribbean north to Norway and Iceland, including the Mediterranean and Black seas. Two spawning populations: western …	Native to large river systems and lakes of central and eastern Europe from the Rhine basin east to the Caspian and Aral sea drainages. Introduced …
Habitat	Open ocean in the Atlantic, Mediterranean, and Black Sea. Highly migratory, ranging from temperate to subtropical surface waters (0-100m, optimum 15-25°C). Aggregates seasonally to feed …	Large rivers, lakes, and reservoirs across Europe and Asia (Volga, Danube, Rhine, Ob). Inhabits deep, slow-moving freshwater with soft substrates. Tolerates turbid water (15-25°C). Highly …

Informações de Pesca

Atributo	Atlantic Bluefin Tuna	Wels Catfish
Peixe Esportivo	Sim	Sim
Classificação de Resistência	10/10	9/10
Recorde Mundial	—	—
Nível de Mercúrio	—	—

Cuisine & Edibility

Atlantic Bluefin Tuna

The pinnacle of raw fish dining — intensely rich, fatty tuna-o-toro with deep red color and buttery, umami-forward flavor. Commands the highest prices globally in Japanese sushi markets.

Wels Catfish

Fatty, soft flesh with a mild, slightly sweet flavor; quality improves from cold, clean water fish. Popular in Central European cuisines — commonly smoked, fried, or braised with vegetables.

Species Overview

Atlantic Bluefin Tuna

The Atlantic bluefin tuna is one of the largest bony fish, capable of crossing the Atlantic in under 60 days. A single specimen has sold for over $3 million at Tokyo's fish market. It can maintain a body temperature above the surrounding water.

Wels Catfish

The wels catfish is the largest freshwater fish in Europe, capable of exceeding 5 meters. Found in large rivers and lakes across the continent, it has been documented beaching itself to catch pigeons. It can live over 80 years.