Common Goldfish vs Plecostomus

Carassius auratus との比較 Hypostomus plecostomus

Taxonomy & Classification

属性	Common Goldfish	Plecostomus
学名	Carassius auratus	Hypostomus plecostomus
目	Cypriniformes	Siluriformes
科	Cyprinidae	Loricariidae
Conservation Status	Least Concern	Least Concern

Physical Traits

属性	Common Goldfish	Plecostomus
最大体長	45.0 cm	50.0 cm
最大体重	2.0 kg	1.0 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.	Dark brown to grayish-black body densely covered with pale yellowish or cream spots and flecks creating a mottled leopard-like pattern; armor-plated scutes visible; belly is pale tan to cream.

Habitat & Environment

属性	Common Goldfish	Plecostomus
水質タイプ	Brackish	Brackish
生息水深	0-20m	—
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 rivers and coastal streams of northeastern South America, from Guyana and Suriname through northern Brazil. Found in rocky river bottoms and estuarine margins; …
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 …	Rivers of the Amazon basin, especially the Rio Tapajós and Rio Orinoco. Inhabits clear-water rivers over gravel and rocks; also near submerged wood. Grazes algae …

Aquarium Suitability

属性	Common Goldfish	Plecostomus
最小水槽サイズ	150 L	280 L
水温	10-24	22-28
pH 範囲	6.0-8.0	6.5-8.0
飼育難易度	Easy	Easy
気性	Peaceful	Peaceful

釣り情報

属性	Common Goldfish	Plecostomus
ゲームフィッシュ	はい	いいえ
ファイト評価	—	—
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.

Plecostomus

Not consumed — ornamental algae-eating catfish kept as a natural tank cleaner; widely popular in freshwater aquariums for its armored body and bottom-dwelling habits.

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.

Plecostomus

The common pleco is a large armored catfish native to South America. Often purchased as an algae eater, it can outgrow most home aquariums. Its sucker-like mouth allows it to rasp algae from surfaces and anchor itself in fast-flowing currents.