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#4837 · 🐌 snails, slugs & other molluscs

Fatmucket

Lampsilis siliquoidea

LCleast concern 🐌 Snails, slugs & other molluscs 📍 outside Europe
10 photos from iNaturalist (Creative Commons) · credits & licences
  1. 1. © Jesse Weinzinger · CC BY-NC 4.0
  2. 2. © Brenda Van Ryswyk · CC BY-NC 4.0
  3. 3. © Lauren Pitt · CC BY-NC 4.0
  4. 4. © Brenda Van Ryswyk · CC BY-NC 4.0
  5. 5. © Ted Nanninga · CC BY-NC 4.0
  6. 6. Argenteuil Regional County Municipality, QC, Canada:© Philippe Blais · CC BY-NC-ND 4.0
  7. 7. Mark Twain National Forest, Shell Knob, MO, US:© MC Barnhart · CC BY-NC 4.0
  8. 8. Chisago County, MN, USA:© Matthew Kvam · CC BY-NC 4.0
  9. 9. ON-522, Parry Sound, Unorganized, Centre Part, ON P0G, Canada:© David LeGros · CC BY-NC 4.0
  10. 10. Lake Nipissing, North Bay, ON, CA:© Caitlyn Howard · CC BY-NC 4.0
Fatmucket, photo 1 of 10
1/10 © Jesse Weinzinger · CC BY-NC 4.0

what is it?

Lampsilis siliquoidea , also known as the Fatmucket Clam , is a species of freshwater bivalve in the Unionidae family.

base stats

  • NL sightings 0iNaturalist, research grade
  • worldwide 7,501iNaturalist observations
  • threat LCleast concern

Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).

fun facts

  • No confirmed wild sightings in the Netherlands on iNaturalist: you'd have to travel for this one.
  • 7,501 observations worldwide on iNaturalist.

fact sheet

English
Fatmucket
scientific name
Lampsilis siliquoidea
class
Bivalvia
order
Unionida
family
Unionidae
IUCN Red List
LC · least concern
sightings in NL
0
sightings worldwide
7,501
GBIF records in NL
0
weight
—
length
—
lifespan
—

IUCN in Dutch: niet bedreigd. Blank means the sources don't say.

relatives· Unionidae

Sources: iNaturalist taxon 125545, Wikidata Q3016282, GBIF 2288157, Wikipedia (EN). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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