AquaStocker

Bronze Cory Care Guide

Corydoras aeneus · Easy care · 20 gallon minimum

Updated June 2026
By the AquaStocker team · How we source our data
Bronze Cory (Corydoras aeneus)
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The hardiest, most beginner-friendly corydoras; a tireless, peaceful sand-sifter best kept in groups.

Adult size2.8"
Min tank20 gal
Temp72–79°F
pH6–8
TemperamentPeaceful
SocialGroups of 6+
Care levelEasy
DietOmnivore

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How big does a bronze cory get?

A bronze cory (Corydoras aeneus) reaches about 2.8 inches as an adult. Plan tank size and tank mates around the adult size, not the small fish you buy at the store.

Tank size & setup

Give a bronze cory a minimum of 20 gallons, with water at 72–79°F and a pH of 6–8. Keep them in groups of at least 6 — they are shoaling fish and become stressed and washed-out alone. As a easy-care, omnivore species, a stable, cycled tank with the right diet keeps them healthiest.

Good tank mates

Pair a bronze cory with peaceful species that share its temperature and pH range. Compatible options include:

About the bronze cory

The bronze corydoras, also known as the green corydoras, bronze catfish, lightspot corydoras or wavy catfish, is a species of freshwater fish in the armored catfish family, Callichthyidae, often kept as an aquarium fish. It is widely distributed in South America on the eastern side of the Andes, from Colombia and Trinidad to the Río de la Plata basin; however, as presently defined it is a species complex and a taxonomic review is necessary. It was originally described as Hoplosoma aeneum by Theodore Gill in 1858 and has historically also been referred to as Corydoras aeneus.

Recommended gear for bronze corys

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FAQ

What size tank does a bronze cory need?
At least 20 gallons. Because they shoal, budget for a group of 6+ rather than a single fish. Bigger is always more forgiving for water quality.
Is the bronze cory good for beginners?
Yes — it's a easy-care species that tolerates typical community conditions.

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