Assassin Snail Tropical Fish Information

Antentome helena
Assassin Snail
Behaviour Active on surface both during day and night, sometimes dormant. Grows to around 2 cm
Max size 2cm
Tank Area Bottom cm ℃ ℃
Feeding Other snails! will also scavenge and eat sinking foods or wafers
pH Range 6-8.5
Hardness vs,s,m,h,vh
Assassin Snail Antentome helena
  • Assassin Snail Antentome helena - thumbnail
  • Assassin Snail Antentome helena - thumbnail

Assassin Snail (Antentome helena)

Assassin Snail Tropical Fish Learn all about the Assassin Snail's feeding habits and food types, its behaviour, its origins, its natural habitats, is it male or female, breeding advice and information, suitable tank mates, its sizing and growth range, minimum tank size, water PH and more. Use our fish community creator tool to plan your tank set up and ensure that the Assassin Snail is the right fish for your aquarium.

The Assassin Snail is an ironic solution to the problem of snails over-running an aquarium, since it has the ability to hunt down and kill other snails. Assassin snails will hunt for any similar sized or smaller snail of another species and literally suck it out of its shell. They are of particular use in controlling the tricky Malayan Trumpet Snail, which can rapidly reproduce and overrun an aquarium. Even the other snails seem to know they are in trouble when assassins are added to the tank, since they can often be seen changing habits and heading up to the surface. Assassin snails are reportedly not a fast reproducer, so one snail problem will not be swapped for another, and if they do reproduce at least they have value and can be sold on or given away. Once the assassins have cleared up any other snails, which may take some time depending on numbers, they will happily feed on debris and algae wafers although they are not a great algae eater. The assassin snail does not tend to eat its own kind and has a quite attractive shell, so a few can be an ideal addition to a tank in their own right, or as a method to control other snail populations. No special requirements are needed to keep these snails and they will settle into most tanks without predators.

Since the snails are 'recyclers' and do not increase the overall waste load on an aquarium, they have a stock level of zero in the Compatibility Checker 

Assassin Snail Facts

| Other names Beast Snail, killer Snail | Origin Indonesia | Breeding Lays eggs

Assassin Snail Help and Advice

If you have a question about keeping Assassin Snail's then please use our Assassin Snail help forum. Join 100's of other fish enthusiasts with 1000's of years experience between them caring for and keeping fish like these.

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Check tank mates for the Assassin Snail fish species

You are in the thinkfish community creator for the Assassin Snail fish species, you can learn all about how the tool works in assessing fish tank mate compatibility at the link provided or use the tool tips provided to guide you. Create a test fish community that includes the Assassin Snail species and any other types of fish or crustacean you'd like to introduce - You can assess the best companions, tank size suitability, stocking levels based on filter type and volume and possible negative interactions and warnings as you build up your aquarium.

Please do check your water type for compatibility with your fish, which can be found on the Assassin Snail information box above and your local water company providers website. Don't waste your money and endanger your fish!
Tank Details
question mark  Rename your tank:
question mark  Length: (cm)
question mark  Volume: (Litres)
question mark  Filter type:

* Recent changes to stocking & filter advice October 2018
* This fishtank will only last for this session - to save your tank please Join/Log in

question mark  Max Stocking level: 0cm
0-1 months 20%: 0cm
1-3 months 40%: 0cm
3-6 months 60%: 0cm
question mark  Current stock level: 0cm
Stock percentage: 0%
question mark  Suggested maximum
fish size for your tank:
My Fishtank Quantity Stock cm

There are currently no fish in your fish tank. To add fish, you can click the 'Add the Assassin Snail to your tank' button. Or search for a different fish using the options presented above

sample fish tank
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