Walker peaclam
- kingdom: Animalia
- phylum: Mollusca
- class: Bivalvia
- order: Venerida
- family: Sphaeriidae
- genus: Pisidium
- species: Pisidium walkeri
La Ronge
Saskatchewan
Canada
Lake Villa
Illinois- Minot
Maine
United States
Walker peaclam La Ronge Lake Villa Minot