🐌 Giant Colombian Ramshorn Snail (Marisa cornuarietis)
🐌 Giant Colombian Ramshorn Snail (Marisa cornuarietis)
Freshwater Large Decorative Snail • Genuine Voracious Plant Eater — Not Suitable for Planted Tanks • Heavy Bioload Cleaner
⚠️ Important Information — Please Read First
We want to be genuinely direct on this one. Unlike the smaller pest ramshorn species, this snail feeds primarily on living and decaying aquatic plants and is genuinely considered a voracious plant eater — it is not suitable for planted aquariums, and multiple sources document it also preying on the eggs and young of other snail species. It's also worth noting this species is genuinely documented as a high-risk invasive species outside its native range, so responsible, contained keeping matters.
📋 The Giant Colombian Ramshorn Snail is genuinely one of the largest and most striking freshwater snails available, with a bold, coiled shell resembling a ram's horn, reaching up to 5-5.5cm in diameter.
This species is genuinely effective at algae and detritus control, and its large size makes it a genuine heavy bioload contributor, requiring solid filtration. A genuinely important correction worth noting: unlike Apple and Mystery Snails, this species lays its egg clutches underwater, typically on glass or submerged surfaces, not above the waterline.
🟡🐌 Highlights
🐌 Genuinely Large Decorative Shell: Up to 5-5.5cm, a true showpiece
⚠️ Genuine Voracious Plant Eater: Not suitable for planted tanks
🧹 Genuine Heavy Bioload Cleaner: Effective on algae and detritus
🥚 Genuine Underwater Egg-Layer: Unlike Apple or Mystery Snails
✅ Genuinely Hardy: Adaptable to a wide range of conditions
🧾 A Quick Look at the Giant Colombian Ramshorn Snail
📛 Common Name: Giant Colombian Ramshorn Snail
🔬 Scientific Name: Marisa cornuarietis
👨👩👧 Family: Ampullariidae
🌍 Origin: South and Central America
📏 Max Size: Genuinely up to 5-5.5cm
🧂 Water Type: Freshwater
🌡️ Temperature Range: 22–28°C (72–82°F)
🧪 pH Range: 7.0–8.0
🧠 Care Level: Easy — genuinely hardy
💖 Temperament: Peaceful toward fish and shrimp; genuinely voracious toward live plants
🏠 Min Tank Size: 40 L (10+ gallons)
📌 Tank Level: Bottom and Surfaces
🧬 Stock Type: Captive-bred
⏳ Lifespan: Genuinely 1-2 years typically
🍽️ Diet: Omnivore, genuinely favoring living and decaying plant matter
🐣 Reproduction: Genuinely prolific; lays gelatinous egg clutches underwater on glass and submerged surfaces

















