Planorbella duryi duryi (Brown Ramshorn Snail)

01 April 2026

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Add a pop of natural beauty and incredible cleaning power to your aquarium with the Brown Ramshorn Snail (Planorbella duryi duryi). Known for their classic coiled shells and voracious appetite for algae, these peaceful scavengers are perfect for keeping planted tanks pristine while adding a charming, rustic aesthetic.

Planorbella duryi duryi (Brown Ramshorn Snail)

Overview

The Brown Ramshorn Snail (Planorbella duryi duryi) is a highly popular and beneficial freshwater invertebrate. Renowned for its unique shell shape and diligent cleaning habits, this snail is an excellent addition to almost any peaceful community aquarium. They are particularly favored by planted tank enthusiasts for their ability to consume algae and detritus without damaging healthy plant life.

Distribution and Habitat

Originally native to North America, particularly Florida and other southern regions, the Planorbella duryi has become cosmopolitan due to the aquarium trade. In the wild, they inhabit slow-moving or stagnant freshwater bodies such as ponds, swamps, and heavily vegetated streams where they feed on decaying plant matter and algae.

Description of Brown Ramshorn Snail

Image of brown ramshorn snail planorbella duryi duryi

As its name suggests, the Brown Ramshorn Snail features a distinctive, spiraled shell that resembles a ram's horn. The shell lays flat rather than spiraling into a cone. The "brown" color morph is the wild-type coloration, featuring varying shades of tan, dark brown, and sometimes subtle leopard-like spots on the shell. The snail's body is typically a darker, opaque brownish-black or reddish-brown.

Keeping and Caring for Brown Ramshorn Snail

These snails are incredibly hardy and adaptable, making them perfect for beginners. However, to ensure their shells remain healthy and free of pitting, specific water parameters must be maintained.

Tank size:

A minimum tank size of 5 gallons is recommended. While they can survive in smaller setups, their rapid breeding rate and bioload make a 5-gallon or larger tank much easier to manage over the long term.

Water Parameters:

Temperature

They thrive in a wide temperature range between 65°F and 82°F (18°C - 28°C), making them suitable for both unheated indoor tanks and tropical aquariums.

pH

A slightly alkaline pH of 7.0 to 8.0 is crucial. Acidic water (below 7.0) will gradually dissolve their calcium-based shells, leading to severe health issues and premature death.

Hardness

Moderate to hard water (GH 8-18) is required. Sufficient calcium and magnesium in the water column are absolutely necessary for proper shell growth and maintenance.

Ammonia, Nitrite, Nitrate

Like all aquatic life, they require 0 ppm Ammonia, 0 ppm Nitrite, and Nitrates kept below 20 ppm through regular tank maintenance and water changes.

Feeding the Brown Ramshorn Snail

Brown Ramshorn Snails are excellent scavengers. They will naturally feed on soft algae, biofilm, and uneaten fish food. To supplement their diet and ensure optimal health, offer sinking algae wafers, blanched vegetables (like zucchini, spinach, and cucumber), and calcium-rich foods like cuttlebone or specialized snail jello to ensure strong shell development.

Breeding Brown Ramshorn Snail

Breeding is incredibly easy; in fact, it happens automatically. They are hermaphroditic, meaning any two snails can mate, and sometimes a single snail can store sperm to reproduce alone. They lay small, gelatinous egg clutches on hard surfaces and plant leaves. The population size is directly tied to the food supply—overfeeding the tank will quickly lead to a population explosion.

Conclusion

The Brown Ramshorn Snail is an invaluable cleanup crew member for the freshwater aquarium. As long as their population is managed through careful feeding and they are provided with adequate calcium, they will keep your tank spotless while adding a touch of natural, rustic charm.

Snail info

Temperature : 65°F - 82°F (18°C - 28°C)
pH: 7.0 - 8.0
Color Form: Brown, Tan

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