They have fine, wavy, medium sized shells with numerous rays. Reproduction Lampsilis become sexually mature by the age of three.
Fertilization occurs internally in the female.
The ova are released by the female into their subbranchial cavity and are fertilized by sperm received through the incurrent siphon. This flap may serve to attract a fish. When the fish approaches, the female releases the glochidia and infects the fish. Habitat Lampsilis fasciola are a fresh water mussel commonly found in small to medium sized rivers. They appear to have an aversion to large rivers and have never been discovered in lakes.