Lampsilis streckeri

It is endemic to Arkansas in the United States, where it is threatened by habitat loss.

It is a federally listed endangered species of the United States.

It is dark yellow to brown and has chevron-shaped spots and chainlike rays.

It is sexually dimorphic, the females being more rounded at the posterior.

[2] Since its listing several additional populations have been discovered in the river.

A speckled pocketbook mussel (Lampsilis streckeri) is displaying the fish-shaped lure she uses to attract a host fish for her parasitic young.