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Encyclopedia / Snails / Orange poso rabbit snail
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Variations

1 kinds · tap one for a closer look

Orange poso rabbit snail

Tylomelania toradjarum · Orange poso, Orange rabbit snail, Poso rabbit snail, Toradjarum

Peaceful but slow.

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· real AED shop prices, never conversions
5.4 cmAdult size ✓
26–30 °CTemperature ✓
7.5–8.5pH ✓
40 LSmallest tank ✓
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✕Not recommended
  • They need different temperatures (26–30 °C vs 21–25 °C). No setting suits both.
  • Their pH needs don't quite meet (7.5–8.5 vs 5–7). Aim between the two and keep it steady.
✕Not recommended
  • They need different temperatures (26–30 °C vs 16–24 °C). No setting suits both.
✕Not recommended
  • They need different temperatures (26–30 °C vs 16–25 °C). No setting suits both.
  • Only a narrow pH range suits both: exactly 7.5.
!With conditions
  • Their pH needs don't quite meet (7.5–8.5 vs 4.5–7). Aim between the two and keep it steady.
!With conditions
  • Only a narrow pH range suits both: exactly 7.5.
✓Compatible
✓Compatible
✓Compatible
✓Compatible
✓Compatible

102 species in our list are a good match.

Facts checked against sources on 16 Oct 2026. ✓ means a source backs it; ? means no reliable source yet. See sources

Care and water

Hardness ✓4–12 dGH
Group size ?Can live alone
Temperament ✓Peaceful
Swims at ✓Bottom
Care level ✓Easy
Diet Omnivore
Lifespan ✓1–3 years
Size in shops 3–5 cm
Growth Slow

Behavior

Peaceful but slow. Needs warm, hard, alkaline water and stable conditions.

  • sand

Food

Algae wafers, vegetables and calcium-rich foods.

Tap a food to see what it is.

Male or female

Sexes are separate, but males and females look the same; there is no easy external way to sex them.

Health

Common problems. Tap one to see the signs. This is a guide, not a diagnosis.

Breeding

Live-bearing (one baby at a time) · Moderate

Live-bearing (ovoviviparous): young develop in a brood pouch and are born one at a time as fully formed snails.

Pairing

Keep 3-5 in a group and let them pair up.

Setup

40 L tank with hard alkaline water, rocks, wood and a sand base.

What starts it

Stable warm water and regular feeding.

Eggs

Embryos grow in the female's brood pouch; each young is pushed out in a soft white egg capsule that dissolves, releasing a fully developed snail, one at a time at intervals. No release interval is documented for this species.

Raising the fry

Baby snails look like adults and graze on biofilm; leave them in the tank.

Common mistakes
  • Soft acidic water
  • Copper in medicines
  • Cold water
Full breeding guide, day-by-day plan and simulator →

Where it lives in the wild

Sulawesi lakesLoading the map…
Native range (rough area)Centre of the rangePlaces on the World Map
RegionCentral Sulawesi, Indonesia
Rivers and lakesLake Poso
HabitatLake shores with stones and soft substrate
Native rangeAbout 60 km across
Open on the World Map

The story of the orange poso rabbit snail

A rabbit snail endemic to Lake Poso in Sulawesi, named after the Toraja people. Its shell is tall and slender (about 5.4 cm, 7-9 whorls). Orange-bodied rabbit snails are sold as "Orange Poso", but trade names are not reliably matched to species.

The Swiss cousins Paul and Fritz Sarasin described this snail in 1897 after exploring Sulawesi. Its bright orange body made it one of the first rabbit snails to become popular in aquariums.

First described by Paul & Fritz Sarasin in 1897. Named for Named after the Toraja people of Sulawesi.

  • Rabbit snails give birth to one large baby snail at a time.
  • Its name honours the Toraja people of central Sulawesi.
  • Tylomelania snails have evolved into many species in Sulawesi's ancient lakes.

Sources

16 facts checked with sources

  • Scientific name

    Invertebrate: freshwater livebearing snail (pachychilid gastropod). The name is valid, but the link between the trade "Orange Poso" rabbit snail and this species is not confirmed by a scientific source; orange-bodied Tylomelania are sold under trade names and their species identity is often uncertain (Aqualibs: "Exact species identification is uncertain from the trade name"). Treat as provisional.

    WoRMS / MolluscaBase record: Tylomelania toradjarum (accessed 2026-10-16) · Wikipedia: Tylomelania toradjarum
  • Familycorrected

    New value.

    WoRMS / MolluscaBase record: Tylomelania toradjarum (accessed 2026-10-16) · Wikipedia: Tylomelania
  • Sizecorrected

    Shell height (not SL/TL), from the type description as given on Wikipedia. Legacy 6 cm slightly high; rabbit snails in the genus range 2-12 cm (Fishkeeper).

    Wikipedia: Tylomelania toradjarum
  • Temperature

    Genus-level hobby data (Tylomelania spp.); no species-specific figure. Fishkeeper: Sulawesi waters never drop below 26 °C.

    Aquarium Breeder: Rabbit Snail – Detailed Guide: Care, Diet and Breeding · Fishkeeper (Maidenhead Aquatics): Sulawesi Snail, Tylomelania spp.
  • pH

    Genus-level hobby data.

    Fishkeeper (Maidenhead Aquatics): Sulawesi Snail, Tylomelania spp. · Aquarium Breeder: Rabbit Snail – Detailed Guide: Care, Diet and Breeding
  • Hardnesscorrected

    New value (legacy none). Natural lake water is soft but alkaline (GH about 7 in the Matano/Towuti shallows); optimal GH 6-8, tolerated 4-12. Legacy "hard water" wording is wrong: soft-to-moderate, alkaline water.

    Aquarium Breeder: Rabbit Snail – Detailed Guide: Care, Diet and Breeding · Fishkeeper (Maidenhead Aquatics): Sulawesi Snail, Tylomelania spp.
  • Smallest tank

    Genus-level hobby source. The same page elsewhere recommends at least 20 gallons (76 L), so 40 L is a bare minimum.

    Aquarium Breeder: Rabbit Snail – Detailed Guide: Care, Diet and Breeding
  • Lifespancorrected

    Genus-level hobby source only ("or even longer with some more luck"); legacy 3-5 years is unsourced.

    Aquarium Breeder: Rabbit Snail – Detailed Guide: Care, Diet and Breeding
  • TemperamentAquarium Breeder: Rabbit Snail – Detailed Guide: Care, Diet and Breeding · Fishkeeper (Maidenhead Aquatics): Sulawesi Snail, Tylomelania spp.
  • Swimming level

    Substrate-dwelling grazer; prefers sand.

    Aquarium Breeder: Rabbit Snail – Detailed Guide: Care, Diet and Breeding
  • Care levelcorrected

    Legacy 2 (moderate); hobby source rates keeping easy as long as water is warm and alkaline.

    Aquarium Breeder: Rabbit Snail – Detailed Guide: Care, Diet and Breeding
  • Where it livescorrected

    New value.

    Wikipedia: Tylomelania toradjarum
  • Male or female

    Genus-level.

    Fishkeeper (Maidenhead Aquatics): Sulawesi Snail, Tylomelania spp.
  • Breeding

    Genus-level.

    Wikipedia: Tylomelania · Fishkeeper (Maidenhead Aquatics): Sulawesi Snail, Tylomelania spp.
  • Eggs and youngcorrected

    Legacy "one large egg at a time ... every 1-2 months" is not sourced: females can hold several embryos at once (e.g. 1-7 in T. towutica), and the 1-2 month interval has no source.

    Fishkeeper (Maidenhead Aquatics): Sulawesi Snail, Tylomelania spp. · Wikipedia: Tylomelania
  • Storycorrected

    Legacy "most popular orange rabbit snail" and the orange body colour are not in a scientific source for this species.

    Wikipedia: Tylomelania toradjarum