 Despite this, it remains the most widespread and abundant member of the genus "Epioblasma", of which the other members are now either extinct or severely imperiled.All Unionidae are known to use the gills, fins, or skin of a host fish for nutrients during the larval glochidia stage.In 2004, it was discovered that female "Epioblasma triquetra" mussels lure the unsuspecting fish towards them, then quickly clamp onto the head of the host fish and pump the glochidia larvae into their gills.