Pygmy Corydoras (Corydoras pygmaeus)
Add lively charm and efficient bottom-cleaning to your aquarium with the Pygmy Corydoras, also known as the pygmy cory, dwarf corydora, or pygmy cory catfish. These tiny, peaceful schooling fish are perfect for nano tanks, planted aquascapes, and community setups. Their active, social nature and easy care make Pygmy Corys a favorite among aquarists of all levels.
Pygmy corydoras are native to the soft, slow-moving streams and flooded forests of the Amazon Basin in Brazil. Unlike most catfish, which are exclusively bottom-dwellers, Pygmy Corydoras are active and social, contributing to a balanced and dynamic tank environment.
| Specifications |
|---|
| Scientific Name: Corydoras pygmaeus |
| Size: 1.5 to 2 inches (3.8 to 5 cm) |
| Lifespan: 5 to 7 years |
| Water Temperature: 72–78°F (22–26°C) |
| Water pH: 6.0–7.0 |
| Hardness: 2–8 dGH |
| Compatibility: Peaceful, schooling fish; best with similar-sized, non-aggressive species |
| Feeding: Omnivorous; accepts flake, pellet, and live foods |
FAQ
What is the ideal tank size for Pygmy Corydoras?
Pygmy Corydoras thrive in tanks of at least 10 gallons, though they can be kept in smaller nano tanks with proper plant coverage and hiding spots.
Are Pygmy Corydoras suitable for beginners?
Yes, Pygmy Corydoras are easy to care for and well-suited for beginners due to their peaceful nature and low maintenance requirements.
Do Pygmy Corydoras need specific substrate or decorations?
They prefer soft substrates like sand and benefit from hiding places such as caves or dense plants. A well-planted tank is ideal for their comfort and activity.

Ella Underwood –
I added a small group of Pygmy Corydoras to my 5-gallon tank with java fern and moss. They’re very active and clean the bottom without causing any stress to other fish. Easy to feed and stay calm even with my betta. Great for a small setup.
Claire Abraham –
These little fish are charming and keep the tank lively. I noticed they dig in the sand and help with waste removal. They do best in a planted tank with some hiding spots. Not the loudest, but they add a nice touch.
Dorothy Stewart –
Perfect for a nano tank. I bought a group of three and they’ve been thriving for over six months. They swim together in schools and don’t chase or eat other fish. Very peaceful and easy to maintain.