Common name: Brook Floater
Scientific name: Alasmidonta varicosa (Lamarck, 1819)

Class:
Bivalvia (Bivalves)
Order:
Unionoida (Freshwater Mussels)
Family:
Unionidae (Unionid Mussels)
Synonyms:
Other common names:

Habitat type(s):
Habitat description(s)
Riverine:
CREEK, Riffle, High gradient, Moderate gradient, MEDIUM RIVER

Ecological systems and subsytems (about):
RIVERINE - NATURAL STREAMS:
Confined river (guide)
The aquatic community of relatively large, fast flowing sections of streams with a moderate to gentle gradient.

Conservation:
Global conservation status rank:
G3
Vulnerable globally - At moderate risk of extinction due to rarity or other factors; typically 80 or fewer populations or locations in the world, few individuals, restricted range, few remaining acres (or miles of stream), and/or recent and widespread declines.
State conservation status rank:
S1
Critically Imperiled in New York - Especially vulnerable to disappearing from New York due to extreme rarity or other factors; typically 5 or fewer populations or locations in New York, very few individuals, very restricted range, very few remaining acres (or miles of stream), and/or very steep declines.
Federal protection:
Not Listed
State protection:
Threatened
Listed as Threatened by New York State: likely to become Endangered in the foreseeable future. For animals, taking, importation, transportation, or possession is prohibited, except under license or permit. For plants, removal or damage without the consent of the landowner is prohibited.
SGCN:
NYNHP track status:
Y: Track all extant and selected historical EOs

More information:
Conservation guide:
https://guides.nynhp.org/brook-floater/
NatureServe explorer link:
https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.111437/Alasmidonta_varicosa/