# Potamilus capax

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Species of bivalve

Potamilus capax Conservation status Vulnerable (IUCN 3.1)[1] CITES Appendix I [2] Scientific classification Kingdom: Animalia Phylum: Mollusca Class: Bivalvia Order: Unionida Family: Unionidae Genus: Potamilus Species: P. capax Binomial name Potamilus capax (Green, 1832)

***Potamilus capax***, the **fat pocketbook pearly mussel** or **fat pocketbook**, is a [species](/source/Species) of [freshwater mussel](/source/Freshwater_mussel), an [aquatic](/source/Aquatic_animal) [bivalve](/source/Bivalve) [mollusk](/source/Mollusk) in the family [Unionidae](/source/Unionidae), the river mussels.[3] It is a federally listed [endangered species](/source/Endangered_species).

It occurs in the [St. Francis](/source/St._Francis_River_(Minnesota)), [Ohio](/source/Ohio_River), and [Mississippi River](/source/Mississippi_River) drainages in the [United States](/source/United_States). Threats to the species include habitat destruction and modification due to [dams](/source/Dam), channels, dredging, and pollutant spills. Since its listing under the [Endangered Species Act](/source/Endangered_Species_Act) in 1976, the fat pocketbook has significantly recovered, with multiple abundant, viable populations. In a 5-year review in 2019, the [US Fish and Wildlife Service](/source/US_Fish_and_Wildlife_Service) recommended delisting the species as recovered.[4]

## References

1. **[^](#cite_ref-iucn_status_17_November_2021_1-0)** Cordeiro, J.; Cummings, K. (2012). ["*Potamilus capax*"](https://www.iucnredlist.org/species/18091/1677819). *[IUCN Red List of Threatened Species](/source/IUCN_Red_List)*. **2012** e.T18091A1677819. [doi](/source/Doi_(identifier)):[10.2305/IUCN.UK.2012.RLTS.T18091A1677819.en](https://doi.org/10.2305%2FIUCN.UK.2012.RLTS.T18091A1677819.en). Retrieved 17 November 2021.

1. **[^](#cite_ref-2)** ["Appendices | CITES"](https://cites.org/eng/app/appendices.php). *cites.org*. Retrieved 2022-01-14.

1. **[^](#cite_ref-ns_3-0)** ["Potamilus capax"](https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.109746/Potamilus_capax). *explorer.natureserve.org*. Retrieved 24 November 2024.

1. **[^](#cite_ref-5-year_2019_4-0)** US Fish and Wildlife Service (2019). [Fat pocketbook(Potamilus capax) 5-Year Review](https://ecosphere-documents-production-public.s3.amazonaws.com/sams/public_docs/species_nonpublish/2927.pdf) (PDF) (Report).

## External links

- Fish and Wildlife Service [\[1\]](https://ecos.fws.gov/docs/life_histories/F00T.html)

- EPA: Pesticides Endangered Species Protection Program [\[2\]](https://archive.today/20121213035221/http://www.epa.gov/espp/arkansas/stfran.htm)

Taxon identifiers Potamilus capax Wikidata: Q1054542 BOLD: 33351 CoL: 4M3D4 ECOS: 2780 EoL: 451965 GBIF: 2287988 iNaturalist: 110199 IRMNG: 10458683 ITIS: 80284 IUCN: 18091 NatureServe: 2.109746 NCBI: 81575 Open Tree of Life: 732225 Species+: 3226 WoRMS: 857378

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