Species · Corydoras pygmaeus (now Gastrodermus pygmaeus)

Pygmy corydoras: tank size, water and tank mates

Swims mid-water; easily eaten by angelfish, gouramis or larger catfish.

Adult size3 cm (1.2 in)
Minimum tank10 US gal
Temperature22–26 °C (72–79 °F)
pH6.4–7.4
Temperamentpeaceful
Keep in groups of6+
Swimsmid
Shrimp & snailsUsually safe

Check a tank with Pygmy corydoras

Good tank mates for Pygmy corydoras

These species share its temperature range and temperament, with no fin-nipping or predation risk under our rules. Still check your tank size and bioload in the checker.

African dwarf frog · Amano shrimp · Assassin snail · Banjo catfish · Black neon tetra · Black phantom tetra · Black ruby barb · Bleeding heart tetra · Bloodfin tetra · Bristlenose pleco · Bronze corydoras · Bumblebee goby · Celestial pearl danio · Checkerboard barb · Cherry barb · Cherry shrimp · Chili rasbora · Clown killifish · Clown pleco · Colombian tetra · Congo tetra · CPO dwarf crayfish · Crystal red shrimp · Diamond tetra

Avoid with Pygmy corydoras

African butterflyfish (predation) · Angelfish (predation) · Bala shark (predation) · Banded archerfish (predation) · Black ghost knifefish (predation) · Blue acara (predation) · Boeseman's rainbowfish (temperature) · Common / comet goldfish (temperature) · Convict cichlid (predation) · Demasoni cichlid (aggression) · Discus (temperature) · Fancy goldfish (temperature) · Firemouth cichlid (predation) · German blue ram (temperature) · Jack Dempsey (predation) · Jewel cichlid (predation) · Oscar (predation) · Paradise fish (aggression)

Sources

Checked 2026-11-09 · confidence: high. These are cautious community guidelines, not guarantees. Not veterinary advice. Report an error.