Species profile
Ramshorn Snail
Planorbella duryi
Peaceful
Easy care
20 L minimum aquarium
1–2 cm adult size
Bottom all
Can be kept singly
About this species
General notes for hobby use.
Seminole/colour-form ramshorn snail. Prolific when excess food is available.
Water parameters
Suggested general range for long-term care.
Temperature
18–28 °C
pH
6.5–8
GH
6–20 dGH
KH
Not yet documented
Flow preference
Low
Data confidence
Verified
Behaviour
General behaviour traits used by TanksConnected compatibility checks.
Minimum group size
Can be kept singly
Tank zone
Bottom all
Territory level
None
Predation risk
None
Bioload factor
0.08
Peaceful air-breathing grazer/scavenger. Population size tracks available food; outbreaks usually indicate sustained overfeeding or excess detritus.
Compatibility flags
Quick cautions for common tank-planning issues.
Fin nipper
No
Plant safe
Yes
Shrimp safe
Yes
Snail safe
Yes
Cave breeder
No
Digs substrate
No
Jump risk
Low
Natural history & care
Research-backed context for long-term aquarium care.
Lifespan
Not yet documented
Diet type
Omnivore
Minimum aquarium volume
20 L
Minimum footprint
30 × 20 cm
Accepted scientific name
Planorbella duryi
Alternative names
Ramshorn Snail, Seminole Ramshorn, Planorbella duryi, Helisoma duryi
Native range
Florida, USA; now widely transported and established through the aquarium trade.
Natural habitat
Freshwater ponds, ditches and slow streams. In aquaria it uses glass, plants and hardscape for grazing and surfaces periodically to breathe air.
Diet & feeding
Primarily algae, biofilm, detritus and decaying plant/animal matter. Healthy plants are usually left alone when adequate food is available.
Breeding & sexing
Research-backed guidance for identifying sexes and reproductive behaviour.
Sexing
Hermaphroditic; conventional male/female external sexing does not apply.
Breeding
Simultaneous hermaphrodite. Lays gelatinous egg masses on hard surfaces/plants and can reproduce rapidly in food-rich aquaria.