Pygmy Cory

Gastrodermus pygmaeus

Formerly: Corydoras pygmaeus

A tiny cory that schools in mid-water rather than just scavenging the bottom.

Water

Freshwater

Temperature

72–79°F

pH

6–7.5

Hardness

2–12 dGH

Max size

1 in

Min tank

10 gal

Temperament

Peaceful

Social

Schooling (8+)

Swim level

All

Diet

Omnivore

Care level

Beginner

Lifespan

3-5 years

Breeding

Egg-depositor

Suitability

Common

Origin

Madeira river basin, Brazil

Pygmy corys are nano-tank gems that shoal through open water in a way larger corys don't. The dwarf corys were placed in the resurrected genus Gastrodermus in 2024.