Benthalbella linguidensBenthalbella linguidens, the longfin pearleye, is a species of ray-finned fish that can be found in the North Pacific from Japan to California. It is a member of Benthalbella, a genus of pearleyes.SizeThis species reaches a max length in excess of.BiologyMost often found between during both day and night. They exhibit diel vertical migration, and individuals commonly migrate to or shallower during nighttime. Diet depends on life stage, with juveniles feeding on crustaceans while adults mainly feeding on other fish.