Nile Tilapia vs Wels Catfish

Oreochromis niloticus comparado com Silurus glanis

Taxonomy & Classification

Atributo	Nile Tilapia	Wels Catfish
Nome Científico	Oreochromis niloticus	Silurus glanis
Ordem	Cichliformes	Siluriformes
Família	Cichlidae	Ictaluridae
Conservation Status	Least Concern	Least Concern

Physical Traits

Atributo	Nile Tilapia	Wels Catfish
Comprimento Máximo	60,0 cm	500,0 cm
Peso Máximo	4,3 kg	300,0 kg
Cor	Grayish-green to olive body with 7–12 regular dark vertical bars on the flanks; caudal fin shows vertical dark stripes; belly pale gray; breeding males develop a reddish hue on the throat and fins.	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	Nile Tilapia	Wels Catfish
Tipo de Água	Brackish	Brackish
Faixa de Profundidade	0-20m	0-30m
Distribuição Geográfica	Native to the Nile River system, Lake Victoria, and other East African Rift Valley lakes. Introduced globally for aquaculture; now established in tropical and subtropical …	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	Originally from the Nile River; now globally distributed through aquaculture. Warm, shallow freshwater lakes, ponds, and rivers (20-35°C). Highly adaptable; tolerates brackish water and oxygen-poor …	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	Nile Tilapia	Wels Catfish
Peixe Esportivo	Não	Sim
Classificação de Resistência	—	9/10
Recorde Mundial	—	—
Nível de Mercúrio	—	—

Cuisine & Edibility

Nile Tilapia

Mild, slightly sweet white flesh with low fat and a firm texture; absorbs marinades and spices well. One of the world's most farmed fish; excellent grilled, fried, or baked.

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

Nile Tilapia

The Nile tilapia is the most widely farmed fish species in the world, cultivated in over 120 countries. Originally from Africa, it is a hardy, fast-growing mouth-brooder that thrives in a wide range of environmental conditions.

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.