Esturgeon commun vs Guppy

Acipenser sturio comparé à Poecilia reticulata

Taxonomy & Classification

Attribut	Esturgeon commun	Guppy
Nom scientifique	Acipenser sturio	Poecilia reticulata
Ordre	Perciformes	Cyprinodontiformes
Famille	Acipenseridae	Poeciliidae
Conservation Status	Critically Endangered	Least Concern

Physical Traits

Attribut	Esturgeon commun	Guppy
Longueur maximale	600,0 cm	6,0 cm
Poids maximum	400,0 kg	0,002 kg
Couleur	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

Attribut	Esturgeon commun	Guppy
Type d'eau	Freshwater & Saltwater	Brackish
Plage de profondeur	4-93m	—
Aire de répartition	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 …
Habitat	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

Attribut	Esturgeon commun	Guppy
Taille minimale de l'aquarium	—	38 L
Température	—	22-28
Plage de pH	—	6.8-7.8
Niveau d'entretien	—	Easy
Tempérament	—	Peaceful

Cuisine & Edibility

Esturgeon commun

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

Esturgeon commun

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.