Answer

Parshwanath Bhagwan’s Janma Rāśi is traditionally understood as Vṛścika Rāśi — Scorpio.

Explanation

In Jain tradition, Bhagwan Parshwanath was the 23rd Tirthankar of the present Avasarpiṇī kāl. His birth is associated with:

• Birthplace: Varanasi / Kashi
• Father: King Ashvasen
• Mother: Queen Vamadevi
• Lanchhan: Serpent

His birth rāśi is commonly given as Vṛścika, which corresponds to Scorpio in the zodiac system.

Takeaway

Bhagwan Parshwanath’s birth rāśi is Vṛścika Rāśi / Scorpio.