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Pygmy Cory Care Guide

Corydoras pygmaeus · Easy care · 10 gallon minimum

Updated June 2026
By the AquaStocker team · How we source our data
Pygmy Cory (Corydoras pygmaeus)
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A tiny corydoras that shoals in midwater unlike most cories; ideal nano bottom-and-middle dweller.

Adult size1.0"
Min tank10 gal
Temp72–79°F
pH6–7.5
TemperamentPeaceful
SocialGroups of 8+
Care levelEasy
DietOmnivore

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How big does a pygmy cory get?

A pygmy cory (Corydoras pygmaeus) reaches about 1.0 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 pygmy cory a minimum of 10 gallons, with water at 72–79°F and a pH of 6–7.5. Keep them in groups of at least 8 — 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 pygmy cory with peaceful species that share its temperature and pH range. Compatible options include:

About the pygmy cory

The pygmy corydoras or pygmy catfish is a species of freshwater ray-finned fish belonging to the subfamily Corydoradinae, the corys, of the family Callichthyidae, the armored catfishes. This catfish is found in the Madeira River basin in Brazil.

Recommended gear for pygmy corys

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FAQ

What size tank does a pygmy cory need?
At least 10 gallons. Because they shoal, budget for a group of 8+ rather than a single fish. Bigger is always more forgiving for water quality.
Is the pygmy cory good for beginners?
Yes — it's a easy-care species that tolerates typical community conditions.

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