The ershaj is the male form of the bolla, which spends its entire life protecting and breeding with the kulshedra. Although it lacks the venom of its sisters, it is stronger and larger, and has no qualms with mutilating its prey. Usually the ershaj subsists on the hearts of prey brought home by the bolla, using its sharp tail to pierce the chest of the corpse and retrieve the organ, and leaving the rest to the kulshedra.