Compatibility brief
Can Mystery Snail live with Pea Puffer?
Risky. This mix is commonly discouraged for typical setups.
Mystery Snail + Pea Puffer: Known incompatible pairing. Pea puffers nip at mystery snail antennae and eyestalks until the snail seals itself permanently. The snail starves over weeks behind a closed operculum. Real tanks add variables Fishori cannot model; treat this as a high-risk read, not certainty.
Compatibility score
Profile confidence: low
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 (peaceful vs semi-aggressive) — can work with space, structure, and careful observation, but not a “drop and forget” mix.
Assessment details
Known incompatible pairing
Top issuePea puffers nip at mystery snail antennae and eyestalks until the snail seals itself permanently. The snail starves over weeks behind a closed operculum.
Temperament difference
Pea Puffer is semi-aggressive, while Mystery Snail is peaceful. This can work with adequate space and hiding spots, but monitor for bullying.
Compatible temperature range
Both fish can comfortably share similar water temperatures.
“Pea puffers nip at mystery snail antennae and eyestalks until…”
Known incompatible pairing
Next steps
Concrete changes, not "research more" filler.
- •Provide plenty of hiding spots and visual breaks so Mystery Snail can escape if harassed.
- •Pea Puffer 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 Mystery Snail can escape if harassed.
- →Pea Puffer should be kept in a group of at least 6 for best health and behaviour.
- →Build a species-only tank for the larger fish, or restock with fish too large to be eaten at adult sizes.
- Aquarium Co-Op. Mystery Snail Care Guide
Primary: retailer care guide on tank size, calcium needs, breeding clutches, and the bridgesii-vs-canaliculata distinction.
- Applesnail.net. Pomacea bridgesii
Secondary: long-running hobby reference for apple snail biology, breeding, and species ID; useful for telling bridgesii from canaliculata.
- 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.
Try this next
Build the full stocking list with Mystery Snail + Pea Puffer
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: medium. Driven by the lower-confidence profile (Mystery Snail): Based on typical aquarium care sources; trade names can be ambiguous, so details may vary between setups.

