Biologist displaying a sheepnose mussel

A biologist holds a sheepnose mussel, pointing out its features

Photo By/Credit

Makeda Nurradin/USFWS

Date Shot/Created

09/01/2023

Media Usage Rights/License

Public Domain

Banner Image

Biologist Beth Glidewell points to the intricate details of a sheepnose mussel’s periostracum, the outermost layer of the shell where growth rings are found. The ridges on the shell are used to help identify different species.

Facility

Genoa National Fish Hatchery

Species

Plethobasus cyphyus

Subject tags

Fish hatcheries

Freshwater mussels

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