Overview
The Bronze Cory (Corydoras aeneus) is a freshwater fish belonging to the family Callichthyidae. It thrives at temperatures of 22–28 °C with a pH of 6.0–7.5, and requires a minimum tank volume of 75 litres. Known for its peaceful bottom-dwelling community fish, it is considered a beginner-level species. Needs fine sand substrate to protect sensitive barbels; will be damaged by sharp gravel. Water changes of 25–30 % weekly, stable parameters, and appropriate tank mates are key to long-term success with this species.
Scientific Classification
| Rank | Classification |
|---|---|
| Family | Callichthyidae |
| Genus | Corydoras |
| Species | Corydoras aeneus |
| Water type | freshwater |
| Native range | Orinoco|Neotropical|Cuenca Orinoco y Amazonas |
Natural Habitat
Corydoras aeneus originates from Orinoco|Neotropical|Cuenca Orinoco y Amazonas. It inhabits freshwater environments and is adapted to the water conditions found in its native range.
Appearance
Adults reach 6–7 cm in length. The body is freshwater and the species displays characteristic coloration suited to its environment.
Behavior
This species is described as a peaceful bottom-dwelling community fish. It naturally schools and should be kept in groups of 6 or more. Activity level is moderate. Needs fine sand substrate to protect sensitive barbels; will be damaged by sharp gravel.
| Trait | Value |
|---|---|
| Temperament | peaceful bottom-dwelling community fish |
| Schooling | Yes |
| Activity level | moderate |
Water Requirements
| Parameter | Ideal Range | Notes |
|---|---|---|
| Temperature | 22–28°C (72–82°F) | Use a reliable adjustable heater |
| pH | 6–7.5 | Avoid sudden swings |
| Hardness (GH) | 2–25 dGH dGH | Soft to moderately hard |
| Ammonia | 0 ppm | Any detectable ammonia signals a problem |
| Nitrite | 0 ppm | Toxic even at low levels |
| Nitrate | <20 ppm | Manage through regular partial water changes |
| Min. tank | 75L (20 gal) | Larger tanks are easier to keep stable |
Interesting Facts
- Corydoras can breathe atmospheric air by swimming to the surface — an adaptation to low-oxygen water.
- Bronze Corys are one of the most bred corydoras in captivity; albino and long-finned forms are common.
- They should always be kept in groups of 6 or more — lone corys become stressed and inactive.
📋 Full Care Guide
Ready to set up a tank for your Bronze Cory? The complete care guide covers tank setup, feeding schedule, common diseases, tank mates, and breeding.
Read Bronze Cory Care Guide →Related Species
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This species profile was reviewed for biological accuracy and practical aquarium care guidance. For suspected illness or disease, test your water parameters first and consult an aquatic veterinarian if symptoms persist.