Amblema neislerii

Fat Three-ridge

FWS Focus


The fat threeridge is a medium-sized freshwater mussel that can grow to be four inches long (10.2 centimeters). This species has a dark brown to black outer shell with seven to nine horizontal ridges and a bluish-white to light purple inner shell. The left valve of the fat threeridge has two equal-sized teeth, and the right valve has a larger and smaller tooth.

Scientific Name

Amblema neislerii
Common Name
fat three-ridge
fat threeridge
Fat threeridge (mussel)
FWS Category

Location in Taxonomic Tree

Identification Numbers



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