Freshwater Species

(Oregon to Southeast Alaska)

Click on photo to enlarge.  Scale line in photo equals 1cm unless otherwise specified.


Home > Northwest Shells & Marine Life > PNW Shells & Marine Life Photos > Freshwater Species
More information on our native freshwater mussels can be found at Freshwater Mussels of the Pacific Northwest.

Citation:  Pacific Northwest Shell Club,
Anodonta kennerleyi Anodonta kennerleyi Anodonta kennerleyi
Anodonta kennerlyi Lea, 1860
Western Floater

Sphaerium c. simile
Sphaerium c. simile
(Say, 1816)
Grooved Fingernailclam

 Margaritifera falcata Margaritifera falcata
Margaritifera falcata (Gould, 1850)
Western Pearlshell

Gonoidea angulata
Gonoidea angulata
(Lea, 1838)
Western Ridged Mussel

Cipangopaludina chinensis
Bellamya chinensis (Gray, 1834)
Chinese Mysterysnail
An introduced species
(previous name - Cipangopaludina chinensis)

Corbicula fluminea
Corbicula fluminea
(Müller, 1774)
Asian Clam
An invasive species

Article - The Asiatic Clam "Rediscovered" on Vancouver Island
Further details - USGS Nonindigenous Species Database

Pisidium casertanum
Pisidium casertanum Poli, 1791
Ubiquitous Peaclam

Radix auricularia Radix auricularia
Radix auricularia (Linnaeus, 1758)
Big-Eared Radix
An introduced species

Physella gyrina Physella gyrina
Physella gyrina (Say, 1821)
Tadpole Physa

Planorbella subcrenata Planorbella subcrenata
Planorbella subcrenata (Carpenter, 1857)
Rough Ramshorn

Ferrissia californica
Ferrissia californica (Rowell, 1863)
Fragile Ancylid
previous name - Ferrissia fragilis (Tryon, 1863)

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Menetus opercularis
Menetus opercularis (Gould, 1847)
Button Sprite
 (synonym - Menetus cooperi)

This page last revised: 6-28-2018

Juga silicula
Juga silicula (Gould, 1847)
Glass Juga

Pristinicola hemphilli
Pristinicola hemphilli
(Pilsbry 1890)
Pristine Pyrg

Amnicola n. sp.
Amnicola limnosa (Say, 1817)
found in lakes in WA,
common in streams in the eastern U.S.

Musculium raymondi
Musculium raymondi
(Cooper, 1890)
Western Lake Fingernailclam

Reference for  Global Invasive Species Database

Stagnicola elodes
Stagnicola elodes
(Say, 1822)
Marsh Pondsnail