Toxolasma cylindrellus

Toxolasma cylindrellus, the pale lilliput naiad, pale lilliput pearly mussel, or pale lilliput, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. Its host is the northern studfish.^[3]

Toxolasma cylindrellus
Conservation status
Critically Endangered  (IUCN 3.1)[1]
CITES Appendix I (CITES)[2]
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Order:	Unionida
Family:	Unionidae
Genus:	Toxolasma
Species:	T. cylindrellus
Binomial name
Toxolasma cylindrellus (Lea, 1868)
Synonyms
Carunculina cylindrellus (Lea, 1868)

Distribution

This species is endemic to the United States. It has experienced a great range reduction and is currently found only in the Paint Rock River drainage in northern Alabama and southeastern Tennessee.^[4] The most recent surveys failed to find this species in the Tennessee portion of the drainage.^{[citation needed]}

Conservation

The pale lilliput has been listed as endangered under the Endangered Species Act of 1973 since 1976.^{[5][6]: 24064}