Encyclopaedia

InvertebrateFreshwaterBrackishIntermediate

Spiny trumpet snail

Thiara winteri

Spiny trumpet snail: aquarium gastropod in the family Thiaridae, useful for biofilm, light algae, and substrate cleanup. Geographical Origin and Habitat: Endemic to a highly restricted...

Taxonomy

Class:Gastropoda

Order:Sorbeoconcha

Family:Thiaridae

Genus:Thiara

Species:Thiara winteri

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Water Temperature

20 - 28 °C

pH Value

7 - 8.4

Water type

Freshwater / Brackish

Invertebrate type

Freshwater snail

Adult size

3 cm

Minimum group

>= 1

6 - 20 dGH

3 - 15 dKH

TDS

120 - 450 ppm

Ecological role

Scavenger

Copper sensitivity

High

Species description

Geographical Origin and Habitat: Endemic to a highly restricted geographical range in Southeast Asia and the Indo-Pacific, natively colonizing the shallow, fast-flowing mountain streams and clear rivers of the Philippines, Indonesia, and parts of the South Pacific islands. Thiara winteri (the Winter's Pagoda Snail, or Spiked Malayan Snail) uniquely inhabits highly oxygenated, crystal-clear freshwater environments. These specific micro-habitats are fundamentally characterized by extremely clean water rushing over massive fields of smooth river pebbles, coarse gravel, and vast stretches of fine, soft sand where they spend their days burrowing.

Taxonomy: Scientifically classified within the Thiaridae family (the trumpet snails), it is a highly specialized, morphologically spectacular relative of the common Malaysian Trumpet Snail. It is a robust, heavily armored species, reaching 3 to 4 centimeters (1.2-1.5 inches) in length. Its defining, breathtaking evolutionary adaptation is an incredibly elongated, steeply spiraled, cone-like shell. Uniquely, the edges of each spiral whorl are adorned with a magnificent crown of distinct, sharp, upward-pointing calcified spikes, giving the shell the distinct, tiered appearance of an ancient Asian pagoda temple.

Social Behavior: They are completely peaceful, non-aggressive, and intensely active burrowing invertebrates. Unlike nerite snails that exclusively graze on glass and rocks, Thiara winteri is a dedicated, obligate substrate sifter. They possess zero territorial instincts and completely ignore all other tank inhabitants. They spend the vast majority of daylight hours completely buried beneath the sand, plowing through the substrate like tiny biological tractors to consume decaying organic matter. They typically only emerge onto the substrate surface or lower glass during the night to forage for uneaten fish food.

Coloration and Sexual Dimorphism: Sexual dimorphism is non-existent visually; remarkably, the Thiaridae family reproduces primarily through parthenogenesis, meaning populations consist almost entirely of clonal females that do not require males to reproduce. The coloration is highly functional, mottled camouflage designed to blend perfectly into sandy riverbeds. The spectacular spiked shell is typically a deeply textured, earthy golden-brown, olive-green, or rich sandy beige. The shell is heavily overlaid with a complex, dizzying pattern of dark brown or reddish-mahogany horizontal bands and tiny, irregular speckles.

Care, breeding and tankmates

Tank Setup: The aquarium architecture must flawlessly accommodate their obligate burrowing behavior and delicate spiked shells. A minimum 30-liter tank is sufficient. The absolute, most critical, non-negotiable requirement is the substrate: it MUST be exclusively fine, soft sand (at least 5 cm deep). If kept on rough, sharp gravel or crushed coral, they cannot burrow, will suffer extreme stress, and the abrasive gravel will physically grind away their spectacular calcified spikes. The layout should feature scattered smooth river stones and dried Indian Almond leaves acting as a food source.

Diet and Feeding: In their clear Southeast Asian streams, they are continuous, meticulous benthic detritivores. They plow through the sand, consuming microscopic decaying plant matter, uneaten fish food, and soft algae. In captivity, they are ravenous bottom-feeders and the ultimate biological cleanup crew for the substrate. While they constantly consume detritus, their diet MUST be supplemented to prevent starvation. They readily consume high-quality sinking omnivore pellets, algae wafers, and blanched vegetables (zucchini, spinach). Crucially, they require calcium-rich foods to maintain the integrity of their magnificent spikes.

Water Quality: Originating from fast-flowing mountain streams, they demand excellent water chemistry and high oxygenation. They thrive in warm tropical temperatures (22-27°C / 72-80°F). Crucially, they strictly require hard, slightly alkaline water (pH 7.0 - 8.0, GH 8-20) saturated with dissolved calcium. If kept in soft, acidic water (like extreme blackwater setups), their spectacular spiked shells will rapidly dissolve, pitting and eroding until the snail dies. They possess absolute zero tolerance for ammonia, nitrites, or stagnant, poorly oxygenated water conditions.

Compatibility and Tankmates: They are the absolute perfect, highly functional substrate-sifting cleanup crew for any peaceful community tank. Because they are completely peaceful and spend their days buried beneath the sand, they are safe from most casual nipping. Excellent tankmates are peaceful community fish, dwarf shrimp (Neocaridina), and peaceful mid-water schooling fish. However, they MUST NEVER be housed with specialized snail-eating predators: large Pufferfish, massive Loaches (like Clown Loaches), or Assassin Snails (Clea helena), which will relentlessly dig them out of the sand and consume them.

Aquarium Breeding: Breeding is prolific, continuous, and completely automatic. Unlike nerite snails that require saltwater, Thiara winteri reproduces entirely in freshwater. They are livebearers that reproduce via parthenogenesis; a single female will independently produce fully formed, microscopic clones of herself. The tiny babies emerge from the mother's shell and immediately bury themselves in the sand to begin feeding. While they breed easily, they generally do not reach the plague-like, explosive population levels of standard Malaysian Trumpet Snails, largely due to their slower growth rate and larger adult size.

Risks and Diseases: The absolute greatest physical risk is severe shell erosion and the complete dissolving of their magnificent spikes, caused by keeping them in soft, acidic water lacking calcium. The second major risk is lethal starvation and stress caused by keeping them on sharp, abrasive gravel; they MUST have soft sand to burrow into. Medically, as invertebrates, they possess absolute zero tolerance for any copper-based medications, which will result in rapid, massive die-offs.

Geographic Origin and Distribution

Endemic to a highly restricted geographical range in Southeast Asia and the Indo-Pacific, natively colonizing the shallow, fast-flowing mountain streams and clear rivers of the Philippines, Indonesia, and parts of the South Pacific islands. Thiara winteri (the Winter's Pagoda Snail, or Spiked Malayan Snail) uniquely inhabits highly oxygenated, crystal-clear freshwater environments. These specific micro-habitats are fundamentally characterized by extremely clean water rushing over massive fields of smooth river pebbles, coarse gravel, and vast stretches of fine, soft sand where they spend their days burrowing.

Origin

Tropical oceans and reefsSouth and Southeast Asia

Invertebrate profile

Diet: Biofilm grazer
Ecological role: Scavenger
Shock sensitivity: High
Calcium and minerals: High
Molting: Shell growth
Reproduction: Oviparous
Compatibility & tankmates: Peaceful

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.

Related species

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Variants and close relatives

Same atlas type, nearby scientific identity, genus, or family.

Long trumpet snail

Stenomelania torulosa

Species description

Care, breeding and tankmates