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Brown-lipped Snail
Cepaea nemoralis
9,466 observations
Eastern Elliptio
Elliptio complanata
1,824 observations
Zebra Mussel
Dreissena polymorpha
1,537 observations
Chinese Mystery Snail
Margarya chinensis
1,411 observations
Fatmucket
Lampsilis siliquoidea
1,394 observations
Giant Floater
Pyganodon grandis
1,326 observations
Leopard Slug
Limax maximus
1,171 observations
Quagga Mussel
Dreissena bugensis
1,169 observations
Milky Slug
Deroceras reticulatum
635 observations
Banded Mystery Snail
Callinina georgiana
621 observations
Flutedshell
Lasmigona costata
519 observations
Flamed Tigersnail
Anguispira alternata
502 observations
Mucket
Ortmanniana ligamentina
483 observations
Western Dusky Slug
Arion subfuscus
479 observations
Spike
Eurynia dilatata
463 observations
Plain Pocketbook
Lampsilis cardium
423 observations
Bellmouth Ramshorn
Planorbella campanulata
412 observations
Lymnaea jugularis
Lymnaea jugularis
332 observations
Marsh Ramshorn
Planorbella trivolvis
331 observations
Pointed Campeloma
Campeloma decisum
321 observations
Creeper
Strophitus undulatus
304 observations
Eastern Whitelip
Neohelix albolabris
294 observations
Fragile Papershell
Potamilus fragilis
277 observations
Elktoe
Alasmidonta marginata
276 observations
Hairy Snail
Trochulus hispidus
269 observations
Cylindrical Papershell
Anodontoides ferussacianus
262 observations
Three-ridge Mussel
Amblema plicata
251 observations
Wavyrayed Lampmussel
Lampsilis fasciola
246 observations
Toga Mantleslug
Philomycus togatus
244 observations
Mapleleaf
Quadrula quadrula
243 observations
Pink Heelsplitter
Potamilus alatus
225 observations
Black Sandshell
Ligumia recta
224 observations
Deertoe Mussel
Truncilla truncata
207 observations
White-lipped Snail
Cepaea hortensis
205 observations
Rainbow Mussel
Cambarunio iris
198 observations
Wabash Pigtoe
Fusconaia flava
193 observations
Eastern Heath Snail
Xerolenta obvia
176 observations
Pimpleback
Pustulosa pustulosa
158 observations
White Heelsplitter
Lasmigona complanata
150 observations
Grooved Fingernailclam
Sphaerium simile
148 observations
Creek Heelsplitter
Lasmigona compressa
147 observations
Purple Wartyback
Cyclonaias tuberculata
144 observations
Striated Fingernailclam
Sphaerium striatinum
112 observations
Paper Pondshell
Utterbackia imbecillis
110 observations
Glossy Pillar
Cochlicopa lubrica
110 observations
Slippershell Mussel
Pressodonta viridis
91 observations
White-lip Globe Snail
Mesodon thyroidus
87 observations
Liver Elimia
Elimia livescens
85 observations
Draparnaud's Glass Snail
Oxychilus draparnaudi
82 observations
Round Pigtoe
Pleurobema sintoxia
78 observations
Frequently Asked Questions
- The 10 most common molluscs in Ontario are:
- Brown-lipped Snail (Cepaea nemoralis)
- Eastern Elliptio (Elliptio complanata)
- Zebra Mussel (Dreissena polymorpha)
- Chinese Mystery Snail (Margarya chinensis)
- Fatmucket (Lampsilis siliquoidea)
- Giant Floater (Pyganodon grandis)
- Leopard Slug (Limax maximus)
- Quagga Mussel (Dreissena bugensis)
- Milky Slug (Deroceras reticulatum)
- Banded Mystery Snail (Callinina georgiana)
- The most observed mollusc in Ontario is Brown-lipped Snail (Cepaea nemoralis), with 9,466 recorded observations.
- Some of the most commonly observed native molluscs in Ontario include:
- Liver Elimia (Elimia livescens)