Discus vs Nile Tilapia

Symphysodon discus との比較 Oreochromis niloticus

Taxonomy & Classification

属性	Discus	Nile Tilapia
学名	Symphysodon discus	Oreochromis niloticus
目	Cichliformes	Cichliformes
科	Cichlidae	Cichlidae
Conservation Status	Least Concern	Least Concern

Physical Traits

属性	Discus	Nile Tilapia
最大体長	20.0 cm	60.0 cm
最大体重	0.25 kg	4.3 kg
体色	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.	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.

Habitat & Environment

属性	Discus	Nile Tilapia
水質タイプ	Freshwater	Brackish
生息水深	—	0-20m
分布域	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 …	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 …
生息地	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. …	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 …

Aquarium Suitability

属性	Discus	Nile Tilapia
最小水槽サイズ	250 L	—
水温	26-30	—
pH 範囲	5.0-7.0	—
飼育難易度	Difficult	—
気性	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.

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.

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.

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.