Compatibility brief
Can Pea Puffer live with Pygmy Corydoras?
Caution. Check the issues below before buying.
Pea Puffer + Pygmy Corydoras: Temperament difference. Pea Puffer is semi-aggressive, while Pygmy Corydoras is peaceful. This can work with adequate space and hiding spots, but monitor for bullying. Outcomes still depend on your tank shape, maintenance routine, and individual fish.
Compatibility score
Profile confidence: medium
Order of checkstank volume vs adults → predation mouth gap → temperament / fin nipping → shared water windows.
40L
Combined minimum footprint reference for these two species: about 40L (larger active fish often want more length).
Temperament gap (semi-aggressive vs peaceful) — can work with space, structure, and careful observation, but not a “drop and forget” mix.
Assessment details
Temperament difference
Top issuePea Puffer is semi-aggressive, while Pygmy Corydoras is peaceful. This can work with adequate space and hiding spots, but monitor for bullying.
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.
Try instead
- →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
Try both species in the full-stock tank check, or open either fish profile for mates lists. 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. Based on multiple reputable aquarium care sources with strong agreement.