Common Goldfish vs Rainbow Trout

Carassius auratus との比較 Oncorhynchus mykiss

Taxonomy & Classification

属性	Common Goldfish	Rainbow Trout
学名	Carassius auratus	Oncorhynchus mykiss
目	Cypriniformes	Salmoniformes
科	Cyprinidae	Salmonidae
Conservation Status	Least Concern	Least Concern

Physical Traits

属性	Common Goldfish	Rainbow Trout
最大体長	45.0 cm	120.0 cm
最大体重	2.0 kg	25.4 kg
体色	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.	Steel-blue to olive-green back with a vivid iridescent pink-to-crimson lateral stripe, flanks densely speckled with small black spots across body and fins.

Habitat & Environment

属性	Common Goldfish	Rainbow Trout
水質タイプ	Brackish	Freshwater & Saltwater
生息水深	0-20m	0-200m
分布域	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 …	Native to cold rivers and coastal waters of western North America from Alaska to northern Mexico. Anadromous steelhead run migrate between Pacific coastal rivers and …
生息地	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 …	Native to cool, clear rivers and streams of western North America; introduced worldwide. Prefers cold, oxygen-rich water (10-18°C) over gravel and cobble at 0-500m elevation. …

Aquarium Suitability

属性	Common Goldfish	Rainbow Trout
最小水槽サイズ	150 L	—
水温	10-24	—
pH 範囲	6.0-8.0	—
飼育難易度	Easy	—
気性	Peaceful	—

釣り情報

属性	Common Goldfish	Rainbow Trout
ゲームフィッシュ	はい	はい
ファイト評価	—	6/10
世界記録	—	—
水銀含有量	—	—

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.

Rainbow Trout

Delicate, mildly sweet flesh ranging from white to pink; low to moderate fat. Excellent pan-fried with butter, baked, or smoked; a top-tier freshwater table fish.

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.

Rainbow Trout

The rainbow trout is native to cold-water tributaries of the Pacific Ocean in Asia and North America. Widely introduced worldwide, it is prized by anglers for its acrobatic leaps and beautiful coloration.