Invertebrate · GBIF taxon 5189745
Seminole Ramshorn
Planorbella duryiAlso known as Florida Ramshorn, Seminole Rams-Horn Snail, Dury's Ramshorn
Seminole ramshorns glide along submersed aquatic vegetation, grazing films of algae and decaying plant tissues with a fine rasplike radula. Equipped with a simple lung and iron-rich red hemolymph, these resilient pulmonate snails frequently surface to trap a bubble of atmospheric air beneath their shell. Although naturally confined to Florida's sluggish freshwater systems, captive breeding has established colorful domestic lineages in home aquaria worldwide.
AquaticFreshwaterHerbivorous
1 / 3—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Diet & prey
- Microscopic algae
- Bacterial biofilm
- Decaying submerged leaves
Predators
- Florida softshell turtle
- Redear sunfish
- Freshwater crayfish
ThreatsAgricultural runoff, aquatic habitat degradation, and invasive competitors
HabitatsSprings, slow-flowing rivers, marshes, canals, and ponds
Life span1–2 years
Size / weightNot available
Classification
- FamilyPlanorbidae
- GenusPlanorbella
- SpeciesPlanorbella duryi
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Safe to observe at a normal distance.
Responsible observation
- Wild Observation: Look along submerged stems of spatterdock and hydrilla in calm Florida spring runs.
- Aquarium Care: Avoid releasing captive specimens into non-native waterways to prevent invasive spread.
Neighbor (c) mfeaver, some rights reserved (CC BY), uploaded by mfeaver · cc-by
Image unavailableCompetitor 
Predator no rights reserved, uploaded by Nick Loveland · cc0
Close Relative (c) L.J. Lamera, some rights reserved (CC BY), uploaded by L.J. Lamera · cc-by
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