European Sturgeon vs Guppy

Acipenser sturio との比較 Poecilia reticulata

Taxonomy & Classification

属性	European Sturgeon	Guppy
学名	Acipenser sturio	Poecilia reticulata
目	Perciformes	Cyprinodontiformes
科	Acipenseridae	Poeciliidae
Conservation Status	Critically Endangered	Least Concern

Physical Traits

属性	European Sturgeon	Guppy
最大体長	600.0 cm	6.0 cm
最大体重	400.0 kg	0.002 kg
体色	Gray-brown to dark brownish-black back with 5 rows of bony scutes that are yellowish-white; sides pale grayish-brown to whitish; belly creamy-white; thick armored body with a shark-like heterocercal tail.	Males display highly variable iridescent patterns on a gray-olive body; spots, reticulations, and solid patches of red, orange, blue, green, and black; flowing fantail fins often multicolored.

Habitat & Environment

属性	European Sturgeon	Guppy
水質タイプ	Freshwater & Saltwater	Brackish
生息水深	4-93m	—
分布域	Historically ranged across European coastal waters from the North Sea and Baltic to the Mediterranean and Black seas, spawning in major rivers like the Rhine, …	Native to freshwater and slightly brackish streams of northern South America including Venezuela, Trinidad, and Barbados. Tolerates a wide range of salinities; introduced on every …
生息地	Neritic, estuaries	Slow-moving rivers, streams, ponds, and drainage ditches of northern South America (Venezuela, Trinidad). Warm, shallow water with dense vegetation (22-28°C). Highly adaptable; introduced worldwide.

Aquarium Suitability

属性	European Sturgeon	Guppy
最小水槽サイズ	—	38 L
水温	—	22-28
pH 範囲	—	6.8-7.8
飼育難易度	—	Easy
気性	—	Peaceful

Cuisine & Edibility

European Sturgeon

Critically Endangered — consumption is illegal throughout its range. Historically prized for its delicate flesh and black caviar; now one of the world's most threatened fish species.

Guppy

Not consumed — a tiny ornamental livebearer prized by hobbyists for its dazzling color variations and ease of breeding in the aquarium.

Species Overview

European Sturgeon

The European sturgeon is a critically endangered anadromous fish that can live over 100 years. Once abundant in European rivers, it is now restricted to a small population in the Gironde estuary. Its eggs are harvested as beluga-grade caviar.

Guppy

The guppy is one of the most widely distributed tropical fish, found in freshwater habitats across the Americas. Males display vivid colors and elaborate tail patterns to attract females. They are live-bearers, giving birth to free-swimming fry.