Brotia pagodula

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Introduction

Brotia pagodula, also known as the Burmese Spiny Snail, is an Asian freshwater snail recognized by its conical shell decorated with strong ribs and spines. Native to Myanmar, it inhabits clean, oxygen-rich streams and rivers with moderate to brisk flow. This wild-collected species appeals to aquarists looking for a decorative gastropod that also grazes biofilm. It remains uncommon in the aquarium trade and requires careful acclimation, stable water and a mature aquarium with plenty of natural grazing surfaces. Its appearance is distinctive, but its long-term success depends more on water quality, minerals and suitable food than on the size of the aquarium alone.

General species description

Brotia pagodula is a freshwater gastropod belonging to the Pachychilidae family. Its profile resembles a small pagoda, with a tall, spiraled and strongly sculptured shell. It is mainly associated with well-oxygenated rivers and streams, where it moves over rocks, gravel and surfaces covered with biofilm. In aquaria, it is generally peaceful and does not attack healthy plants or living animals. It is less suited to newly established tanks than to mature systems with developed biological growth. Because this species is collected in the wild, quarantine and gradual acclimation are sensible precautions. Its availability is moderate to limited, so it is seen less often than more common aquarium-maintenance snails.

Geographic origin and biotope

Reference country: Myanmar. Brotia pagodula is associated with the Salween River basin in Southeast Asia. Its habitat includes river sections where the water remains clear, oxygenated and seasonally warm. The bottom is generally made up of stones, gravel and coarse sand rather than compact mud. Aquatic plants may be sparse in the fastest sections, while algae, biofilm and organic deposits on rocks provide important feeding opportunities. In captivity, the species benefits from a clean, stable and well-filtered environment with meaningful water circulation. Flow should remain strong enough to provide oxygen and prevent stagnant areas, but not so strong that the snail cannot move or feed effectively.

Specific location and local name

The reported distribution of Brotia pagodula lies in the Salween River basin of Myanmar, including tributaries and river sections suitable for rheophilic gastropods. The common name used in the international aquarium trade is Burmese Spiny Snail. This name refers to its Burmese — now Myanmar — origin and to the spiny sculpture of the shell. In aquaria, it may also be sold under its full scientific name, which helps avoid confusion with other spiny-shelled snails from different regions.

Appearance and physical characteristics

The shell of Brotia pagodula is elongated, conical and made up of clearly defined whorls. Its surface carries ridges and projections that create the appearance of a small spiny pagoda. Coloration may range from brown and olive to beige or gray, often with darker lines or shading along the sutures. The body is dark and has a broad foot suited to gripping hard surfaces. Adult size usually reaches about 5 cm, depending on the individual and growing conditions. This body shape is well suited to flowing water, where strong adhesion helps prevent the snail from being displaced by the current.

General diet

Brotia pagodula mainly grazes on algae, biofilm and microorganisms growing on rocks, glass, wood and other hard surfaces. In a mature aquarium, these natural resources should form the basis of its diet. Supplementary foods can include sinking invertebrate wafers, vegetable-based foods and blanched zucchini or spinach, along with organic material produced by an established aquascape. Do not rely only on visible algae in a clean aquarium, as it may quickly become insufficient. Water that is too soft or mineral-poor can also damage shell development, so an adequate supply of calcium and other minerals is important. Avoid excessive supplementation and sudden changes in water chemistry.

Essential data

• River of origin: Salween River basin
• Local name used: Burmese Spiny Snail
• Origin of the scientific name: Brotia is the genus name; pagodula refers to the small-pagoda appearance of the shell.
• Full-name etymology: Brotia, a generic name; pagodula, a name suggesting a small pagoda.
• Common/vernacular names: Burmese Spiny Snail; Burmese spiny snail
• Family: Pachychilidae
• Subfamily: Pachychilinae
• Pronunciation: broh-tee-ah pah-goh-doo-lah
• Discovery: Augustus Addison Gould, 1847
• Maximum adult size: About 5 cm
• Water temperature and pH: About 22 to 28 °C; pH around 7.0 to 8.2
• Stream appearance and surrounding vegetation: Clear, oxygenated and rocky watercourses; aquatic vegetation is often sparse in fast-flowing sections.
• Typical tankmates: Small native river fish, freshwater shrimp and other non-predatory snails.
• Temperament and behavior: Peaceful and bottom-dwelling; mainly a grazer that uses hard surfaces and usually ignores healthy plants.
• Water depth: Shallow to moderately deep river sections.
• Sexual dimorphism: Not obvious externally.
• Bottom structure and flow: Rocks, gravel and coarse sand; moderate to brisk flow with well-oxygenated water.

In your aquarium

For successful care of Brotia pagodula, choose a mature, well-filtered aquarium with many hard surfaces covered in biofilm. Stable, adequately mineralized water and high oxygen levels support activity and shell preservation. Avoid copper-based treatments, rapid pH shifts and tankmates that may harass or eat snails. Since specimens are collected from the wild, careful quarantine is recommended before introducing them to a community aquarium. Supplementary vegetable and sinking foods become essential when the aquarium does not produce enough natural grazing material.