Compatibility brief
Can Pea Puffer live with Pygmy Corydoras?
Caution. Check the issues below before buying.
Compatibility score
Profile confidence: medium
How we decideFishori checks adult size and predation risk, behaviour, water requirements and tank needs before giving a verdict.
40L
Combined minimum footprint reference for these two species: about 40L (larger active fish often want more length).
Temperament gap (semi-aggressive vs peaceful) — needs space, structure, and careful observation, not a “drop and forget” mix.
Assessment details
Temperament difference
Top issuePea Puffer is semi-aggressive, while Pygmy Corydoras is peaceful. Expect chasing or stress unless the tank is large and heavily structured — monitor closely.
Narrow temperature overlap
Pea Puffer and Pygmy Corydoras have only a narrow shared temperature range. Maintaining stable water temperature will be important.
“Pea Puffer is semi-aggressive, while Pygmy Corydoras is peaceful”
Temperament difference
Next steps
Concrete changes, not "research more" filler.
- •Provide plenty of hiding spots and visual breaks so Pygmy Corydoras can escape if harassed.
- •Pea Puffer should be kept in a group of at least 6 for best health and behaviour.
- •Pygmy Corydoras should be kept in a group of at least 6 for best health and behaviour.
- Seriously Fish. Carinotetraodon travancoricus
Primary: aquarium size, water chemistry, behaviour, and compatibility (URL verified in upgrade script; recheck if site content changes).
- FishBase. Carinotetraodon travancoricus
Secondary: taxonomy, distribution, and maximum length in nature; cross-check with aquarium import lines and measured tank parameters.
- Wikipedia. Carinotetraodon travancoricus
Secondary: general species context; verify all husbandry numbers against a dedicated aquarium care sheet and your test kit, not a single table row.
- Seriously Fish. Corydoras pygmaeus
Primary: aquarium size, water chemistry, behaviour, and compatibility (URL verified in upgrade script; recheck if site content changes).
- FishBase. Corydoras pygmaeus
Secondary: taxonomy, distribution, and maximum length in nature; cross-check with aquarium import lines and measured tank parameters.
- Wikipedia. Corydoras pygmaeus
Secondary: general species context; verify all husbandry numbers against a dedicated aquarium care sheet and your test kit, not a single table row.
Try this next
Build the full stocking list with Pea Puffer + Pygmy Corydoras
Plan further
Check each species’ mates list, size the glass, then verify the full stock in the builder. Methodology explains how verdicts are produced.
Individual fish vary in personality. Fishori uses conservative hobby rules. Observe any new introduction closely, feed thoughtfully, and keep a quarantine or backup plan. This is not veterinary advice.
Profile data confidence: high. Checked against several solid care sources that mostly agree.