Can they live together?

Pea Puffer and Mystery Snail compatibility

Compare their preferred water conditions and basic behavior.

Pea Puffer

Pea / Dwarf Puffer

Mystery Snail

Mystery Snail

Not recommended

Species-specific care guidance does not recommend this combination.

Checked for 1 Pea Puffer and 1 Mystery Snail in a 38 L aquarium.

Shared environment

Recommended temperature
24 ~ 26°C

Recommended pH
7.2 ~ 7.8

Suggested group sizes

Pea Puffer: at least 1

Mystery Snail: at least 1

Together they need at least 38 L and about 45 cm of length.

Check that your aquarium is large enough for both species.

Side by side

ItemPea PufferMystery Snail
Average adult sizeabout 2.5 cm (nano)about 5 cm (small)
Recommended temperature24~27°C22~26°C
Recommended pH7.0~7.87.2~8.2
Water hardnessMedium hardnessMedium hardness
Minimum aquarium38 L, about 45 cm long19 L, about 20 cm long
Group sizesingle is finesingle is fine
TemperamentAggressiveGentle
Social behaviorSocialCan be kept alone or in a group
Swimming zonemultiple levelsbottom
Activity levelModerateLow
Waste levelLowLow
With shrimpadults not recommended, babies not recommendedadults usually fine, babies usually fine
Beginner level2/55/5

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Frequently asked questions

Can Pea Puffer and Mystery Snail live together?

Planner result: Not recommended. Species-specific care guidance does not recommend this combination.

What water conditions suit both Pea Puffer and Mystery Snail?

Keep the water at 24~26°C and pH 7.2~7.8, where both planner ranges overlap. Pea Puffer prefers medium hardness and Mystery Snail prefers medium hardness.

How big should an aquarium for Pea Puffer and Mystery Snail be?

At least 38 L and about 45 cm long, the larger of the two minimums (Pea Puffer: 38 L, Mystery Snail: 19 L). Group sizes add to the bioload, so bigger is safer.

How many Pea Puffer and Mystery Snail should I keep?

Pea Puffer: can be kept singly (social). Mystery Snail: can be kept singly (can be kept alone or in a group).

Do Pea Puffer and Mystery Snail have similar temperaments?

Pea Puffer is aggressive and swims in the multiple levels; Mystery Snail is gentle and swims in the bottom. Activity: moderate vs low.

Sources & review

Each species' values are cross-checked against the references below and normalized into the planner's own ranges; the verdict comes from the planner's published rules. No text or images are copied.

Pea Puffer

Review confidence A on an A–C scale (A is highest); last reviewed 2026-10-07.

Mystery Snail

Review confidence A on an A–C scale (A is highest); last reviewed 2026-10-07.

How compatibility is checked

Try it in my aquarium

This is a guide. Individual behavior and aquarium conditions can change the outcome.