Shoal & Stem
Back to Flora & Fauna

No photo yet

Sign in to submit the first photo

FishbeginnerFreshwater

Bronze Corydoras

Corydoras aeneus

AnimaliaChordataActinopterygiiCallichthyidae

📍 South America

Ask Finn

The bronze corydoras is one of the most widely kept bottom-dwellers in the hobby. Its metallic bronze-green flanks and peaceful temperament make it a staple of community tanks. Like all corydoras it requires fine sand to protect its sensitive barbels and prefers groups of six or more.

Size2.75"
Min Tank20g
School6+
peaceful
Zonebottom

Care Guide

Diet

Bronze corydoras are omnivores that require a varied diet of sinking pellets, algae wafers, and frozen foods like bloodworms and daphnia. Feed small amounts once daily, ensuring food reaches the substrate where they forage. They will also consume leftover food from other tank inhabitants, making them useful cleanup crew members.

Behavior

Bronze corydoras are peaceful, social bottom-dwellers that spend most of their time foraging through the substrate using their sensitive barbels. They are schooling fish and become more active and confident in groups of six or more. They are nocturnal to crepuscular, showing peak activity during dawn and dusk hours.

Breeding

Breeding in captivity is possible but requires specific conditions including cooler water temperatures (20-22°C), frequent water changes, and conditioning with live foods. Males will chase females in a distinctive T-position spawning behavior, with females depositing eggs in small clusters. Fry are relatively easy to raise on infusoria and finely crushed flake food once they become free-swimming.

Common Diseases

Barbel Erosion

Symptoms

Shortened, frayed, or missing barbels; reduced foraging behavior

Treatment

Ensure fine sand substrate (not gravel); improve water quality with frequent changes; provide varied diet with sinking foods

Ich (Ichthyophthirius multifiliis)

Symptoms

White spots on body and fins; increased scratching against objects; labored breathing

Treatment

Raise temperature gradually to 28-30°C; perform daily water changes; use aquarium salt or ich medication as directed

Fin Rot

Symptoms

Frayed or deteriorating fins; discoloration at fin edges; lethargy

Treatment

Improve water quality with frequent water changes; remove decaying food; treat with antibacterial medication if severe

Dropsy

Symptoms

Bloated abdomen; pinecone-like scale appearance; loss of appetite; lethargy

Treatment

Isolate affected fish; perform frequent water changes; provide quality diet; treat with antibiotics if caught early

Community Photos

0 photos

Photos are added when members log a tank with this species and upload a photo in their tank journal. Add your own tank to contribute.

No photos yet — add a tank with Bronze Corydoras to be the first!

Sign in to vote.

Tips from the community 💡

0 tips

Real experiences, care advice, and keeper notes. Finn learns from these too.

Sign in to share your experience.

No community tips yet — be the first to share your knowledge!

Tanks keeping this 🐟

Kept by 2 hobbyists

Community tanks featuring Bronze Corydoras.

Quick Facts

diet
Omnivore – sinking pellets, wafers, bloodworms, daphnia
lifespan
10+ years
max size
7 cm (2.8 in)
tank size
20 gallons minimum
school size
6+
temperament
Peaceful, schooling

Water it likes

ph
6.0–7.5
ammonia
0 ppm
nitrate
<20 ppm
hardness
2–15 dGH
temperature
72–82°F (22–28°C)

Stats

Community tips0
Kept by2 hobbyists