Ṛṣabha (Rishabha) is a Nāga(Naga; the Snake race) belonging to Dhṛtarāṣtravaṁśa (Dhritarashtravamsa; the genealogical line of Dhritarashtra). It is known that he got killed in the sarpayajña (sarpayajna; a fire-sacrifice for killing snakes) of King Janamejaya.