Bronze Corydoras

Corydoras aeneus

Also known as: Bronze cory, Aeneus cory, Green cory

Quick Facts

• Adult size: 6.5-7.5 cm (2.56-2.95 inches)
• Minimum tank size: 75 litres (20 gallons)
• Lifespan: 5–10 years
• Temperament: peaceful
• Swimming level: bottom
• Diet: omnivore
• Minimum group size: 6
• Difficulty: beginner

Water Parameters

• Temperature: 21–27°C
• pH: 6–8
• Hardness: 36–268 dGH

Care Summary

A hardy, peaceful bottom-dweller and one of the most popular community fish in the hobby. Schools along the substrate sifting for food and occasionally darts to the surface to gulp air — this is normal behaviour, not distress. Requires a soft substrate and tank mates of similar temperament. Excellent beginner fish but commonly kept in groups too small for their wellbeing.

Tankmates

A peaceful schooling species that must be kept in groups of at least 6 — solitary corydoras become stressed and stop foraging. Compatible with most peaceful community fish. Avoid sharp or coarse substrate as it damages their delicate barbels; smooth sand or rounded gravel is ideal.

Compatible with

• Betta
• Neon Tetra
• Harlequin Rasbora
• Ember Tetra
• Cherry Shrimp

Avoid keeping with

• Angelfish Adult
• Large Cichlids
• Fin Nippers

Common Problems

• damaged barbels from sharp substrate
• ich
• fin rot
• stress from being kept singly or in pairs

Sources: seriouslyfish.com, fishbase.org · Last updated: 2026-06-01