Key Characteristics

Conservation Status


The triangle floater prefers small, steady-flowing streams close to headwaters. It is sometimes found in lakes or ponds, and most often found in gravelly sand, mud, or between large stones.

Host Species

Common shiner, blacknose dace, longnose dace, pumpkinseed sunfish, fallfish, slimy sculpin, white perch, white sucker, largemouth bass

More information



Distribution map has locations where this species has been documented and digitized into the atlas database. Systematic surveys have not been conducted for many species and those surveys that have been conducted have been largely focused on endangered species. Therefore, in some cases, the actual distribution of freshwater mussels may be more extensive than what is presented here. Shaded areas are watershed sub-basins and river main stems are shown.