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Compatibility

Compatibility brief

Can Assassin Snail live with Mystery Snail?

Assassin Snail

Assassin Snail

Anentome helena

peaceful~2.5cm
Mystery Snail

Mystery Snail

Pomacea diffusa

peaceful~5cm
VerdictRISKY

Risky. This mix is commonly discouraged for typical setups.

Assassin Snail + Mystery Snail: Known incompatible pairing. Assassin snails exist to kill other snails — that is the whole trade. Juvenile and moulting mystery snails are catchable, and groups of assassins take adults. Do not mix assassins with snails you want to keep. Real tanks add variables Fishori cannot model; treat this as a high-risk read, not certainty.

Compatibility score

30/100

Profile confidence: low

Order of checkstank volume vs adults → predation mouth gap → temperament / fin nipping → shared water windows.

Min tank

40L

Combined minimum footprint reference for these two species: about 40L (larger active fish often want more length).

Temperature
Range in °C20–28°C shared
Assassin SnailMystery SnailShared window
pH
Range7–8 shared
Assassin SnailMystery SnailShared window

Assessment details

  1. Known incompatible pairing

    Top issue

    Assassin snails exist to kill other snails — that is the whole trade. Juvenile and moulting mystery snails are catchable, and groups of assassins take adults. Do not mix assassins with snails you want to keep.

  2. Assassin Snail eats snails

    Assassin Snail preys on aquarium snails — Mystery Snail will be hunted, not cohabited. Do not mix a valued snail with this species.

  3. Compatible temperature range

    Both fish can comfortably share similar water temperatures.

“Assassin snails exist to kill other snails — that is the…”

Known incompatible pairing

Next steps

Concrete changes, not "research more" filler.

Try instead

  • →Build a species-only tank for the larger fish, or restock with fish too large to be eaten at adult sizes.
Sources from both profiles
Only URLs that exist on the species records are shown. We do not fabricate citations.

Try this next

Build the full stocking list with Assassin Snail + Mystery Snail

Compare another pairOpen tank builder

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: medium. Typical care sources — trade names for this fish get mixed up, so verify the ID before you buy.

Full tank-mate guides

Related pair checks

Other tank mates for Assassin Snail

Assassin Snail + Mystery Snail — common questions

Can Assassin Snail live with Mystery Snail?
For most keepers, no. The verdict is RISKY: at least one check fails hard for a typical home tank. Choose a different pairing, or read the assessment details on this page to see exactly what fails before deciding.
What tank size do you need for Assassin Snail and Mystery Snail together?
Plan around 40 litres as the working minimum. That figure comes from each species' published minimum and their group needs, and it assumes adult sizes, not shop sizes.
What's the main risk?
Known incompatible pairing. That is the check that fails outright for this pair. The matching entry under assessment details on this page explains the reasoning and the numbers behind it.