New York Natural Heritage Program
Brook Floater
Alasmidonta varicosa (Lamarck, 1819)

Habitat [-]
The Brook Floater is strictly a running water species favoring gravelly riffles in creeks and small rivers (Strayer and Jirka 1997).

Associated Ecological Communities [-]
  • Confined river
    The aquatic community of relatively large, fast flowing sections of streams with a moderate to gentle gradient.

Associated Species [-]
  • Dwarf Wedgemussel (Alasmidonta heterodon)
  • Triangle Floater (Alasmidonta undulata)
  • Eastern Elliptio (Elliptio complanata)
  • Yellow Lampmussel (Lampsilis cariosa)
  • Eastern Lampmussel (Lampsilis radiata)
  • Green Floater (Lasmigona subviridis)
  • Eastern Floater (Pyganodon cataracta)
  • Creeper (Strophitus undulatus)