Bronze Cory

Osteogaster aenea

Also known as: Green Cory, Aeneus Cory

Formerly: Corydoras aeneus

The hardy, ever-popular bottom-dweller — reassigned from Corydoras to Osteogaster in 2024.

Water

Freshwater

Temperature

72–80°F

pH

6–8

Hardness

2–18 dGH

Max size

2.8 in

Min tank

20 gal

Temperament

Peaceful

Social

Schooling (6+)

Swim level

Bottom

Diet

Omnivore

Care level

Beginner

Lifespan

5-10 years

Breeding

Egg-depositor

Suitability

Common

Origin

Widespread South America

Bronze corys are peaceful, social scavengers that must be kept in groups over a soft sand bottom to protect their barbels. The 2024 Corydoradinae revision moved the aeneus group into the resurrected genus Osteogaster, though shops still label them Corydoras aeneus.