Aquarium Planner

A beginner-friendly fish guide

Pygmy Cory

Pygmy Cory

Gastrodermus pygmaeus

Gentle temperament; shoaling fish. Check the planner before choosing tank mates.

Beginner level 5/5

A good environment

Recommended temperature
23 ~ 25°C
Recommended pH
6.5 ~ 7.3
Preferred water hardness
Medium hardness
Minimum aquarium
41L or more

Reference sources list a wider range of 22~26°C and pH 6.4~7.4. The planner uses the narrower range above as a safer starting point for beginners.

At a glance

Group
Corydoras
Average adult size
about 3 cm (nano)
Minimum tank length
about 45 cm
Activity level
Moderate
Waste level
Low
Lid recommended
Not required
Mature tank preferred
Not required

Temperament & group size

Gentle temperament; Shoaling fish.

For a comfortable group, keep at least 6.

Usually swims in the middle & bottom.

Tank-mate notes

Adult shrimp may do well with hiding places, though individual fish vary.

Baby shrimp may be eaten. A separate breeding tank is safer.

Check each combination carefully, especially when size or temperament differs.

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Frequently asked questions

How big does Pygmy Cory get, and what tank size does it need?

Adults average about 3 cm, a nano species. The planner recommends an aquarium of at least 41 L and about 45 cm long.

What water temperature and pH does Pygmy Cory need?

The planner range is 23~25°C and pH 6.5~7.3, with medium hardness. Reference sources list a wider range of 22~26°C and pH 6.4~7.4. The planner uses the narrower range above as a safer starting point for beginners.

How many Pygmy Cory should be kept together?

Shoaling fish: keep at least 6. Temperament is gentle.

Can Pygmy Cory live with shrimp?

Adult shrimp: usually fine. Baby shrimp: not recommended.

Is Pygmy Cory a good fish for beginners?

Beginner level 5/5. Activity: moderate; waste: low.