Corydoras vs Truite arc-en-ciel

Corydoras paleatus comparé à Oncorhynchus mykiss

Taxonomy & Classification

Attribut	Corydoras	Truite arc-en-ciel
Nom scientifique	Corydoras paleatus	Oncorhynchus mykiss
Ordre	Siluriformes	Salmoniformes
Famille	Callichthyidae	Salmonidae
Conservation Status	Least Concern	Least Concern

Physical Traits

Attribut	Corydoras	Truite arc-en-ciel
Longueur maximale	7,0 cm	120,0 cm
Poids maximum	0,005 kg	25,4 kg
Couleur	Pale olive-gray to greenish body with irregular dark olive to black marbled blotches and spots; a broad dark blotch at the dorsal fin base; belly is cream to white; fins spotted or barred.	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

Attribut	Corydoras	Truite arc-en-ciel
Type d'eau	Freshwater	Freshwater & Saltwater
Plage de profondeur	—	0-200m
Aire de répartition	Native to the La Plata River system and coastal rivers of southeastern Brazil, Uruguay, and northeastern Argentina. Inhabits shallow streams, flooded meadows, and sandy-bottomed lagoons …	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 …
Habitat	Rivers and streams of the Río de la Plata basin in South America (Brazil, Argentina, Uruguay). Inhabits clear-water streams over sandy and muddy bottoms. Active …	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

Attribut	Corydoras	Truite arc-en-ciel
Taille minimale de l'aquarium	40 L	—
Température	22-26	—
Plage de pH	6.0-8.0	—
Niveau d'entretien	Easy	—
Tempérament	Peaceful	—

Informations sur la pêche

Attribut	Corydoras	Truite arc-en-ciel
Poisson de pêche sportive	Non	Oui
Cote de combativité	—	6/10
Record du monde	—	—
Teneur en mercure	—	—

Cuisine & Edibility

Corydoras

Not consumed — a small ornamental bottom-dwelling catfish beloved for its peaceful temperament and role as a substrate scavenger in community aquariums.

Truite arc-en-ciel

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

Corydoras

The peppered corydoras is a peaceful bottom-dwelling catfish native to South American rivers. It uses its barbels to sift through substrate for food and should be kept in groups of six or more. It can gulp atmospheric air in low-oxygen conditions.

Truite arc-en-ciel

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.