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Trochus Snail

Trochus histrio

A highly popular and beneficial herbivorous marine gastropod, famous for its conical striped shell and for being a tireless cleaner of rockwork and glass.

Family
Tegulidae
Origin
Indo-Pacifico tropicale
Origin
Cosmopolitan or introducedSouth and Southeast AsiaAustralia, New Guinea, and OceaniaTropical oceans and reefs
Tank use
Used in 0 tanks

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Species challenges
Water Temperature

22 °C - 28 °C

pH Value

8.1 - 8.4

Water type

Marine

Ecological role

Squadra di pulizia dell'acquario (CUC)

Copper

Alta

Species description

Geographical Origin and Habitat: Widely distributed in the tropical Indo-Pacific, including the coral reefs of Indonesia, the Philippines, Red Sea, Australia, and Pacific islands. Inhabits shallow rocky reefs.

Taxonomy: Member of the family Tegulidae. Features a thick, top-shaped conical shell decorated with spiral ridges and nodules, measuring 3-5 cm in width. Possesses the valuable ability to right itself. Grows to 4 cm.

Social Behavior: Peaceful, hardworking, and active primarily at night. Constantly crawls over rockwork and glass surfaces, scraping algae off. Harmless to corals and tankmates.

Coloration and Sexual Dimorphism: Shell color has a white or cream base, marked with thick, irregular reddish-pink or dark brown vertical zig-zag stripes. No visible sexual dimorphism.

Care, breeding and tankmates

Tank Setup: Suitable for reef aquariums of 10 gallons or larger. Requires stable live rock structures with ample surface area for grazing. Popular for nano reefs due to its modest size.

Diet and Feeding: Strictly herbivorous. Consumes green hair algae, diatoms, cyanobacteria, and film algae. Supplement with dried seaweed (nori sheets) if natural algae is depleted.

Water Quality: Stable reef parameters. Salinity SG 1.021-1.025, pH 8.1-8.4, temperature 22-28°C. Highly sensitive to copper treatments and elevated nitrates.

Compatibility and Tankmates: 100% reef-safe. Perfect cleanup crew snail. Compatible with peaceful reef fish and corals. May occasionally be targeted by large hermit crabs.

Aquarium Breeding: Can reproduce spontaneously in home aquariums through broadcast spawning. Fertilized eggs develop into larvae that settle quickly on rocky substrates.

Risks and Diseases: Starvation in overly clean aquariums. Low calcium or alkalinity levels preventing proper shell growth. Highly sensitive to copper treatments.

Invertebrate profile

Type
Gasteropode marino
Diet
Alghivoro
Ecological role
Squadra di pulizia dell'acquario (CUC)
Minimum group
1
Adult size
4 cm
GH
n/a
KH
8 dKH - 12 dKH
TDS
n/a
Copper
Alta
Shock sensitivity
Alta
Calcium and minerals
Alti. Necessita di livelli costanti di calcio, magnesio e durezza KH per garantire il corretto sviluppo e l'ispessimento della conchiglia.
Molting
Non muta (è un gasteropode), la conchiglia cresce gradualmente per deposizione di strati calcarei da parte del mantello.
Reproduction
Si riproduce abbastanza comunemente tramite rilascio di gameti in acquario. Le larve si insediano rapidamente sul fondo roccioso.
Compatibility & tankmates
Assolutamente pacifico. Noto per la capacità di raddrizzarsi da solo in caso di caduta rovesciata, riducendo la predazione.

Ecological Estimates & Biological Models

Image gallery

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

Related species

Other recommended species with similar care requirements and water parameters.

Last updated: 06/13/2026