Answer

If you mean the Oswal Jain family name Parakh, it is commonly listed under the Aadityanag gotra, and some community lists also treat Parakh as a sub-gotra within Aadityanag. ( jainsamaj.org)

Explanation

In Jain society, gotra is generally a community and family custom, not a scripturally fixed rule. So the same surname can belong to different ancestral lines, and surname alone cannot determine gotra with full certainty. ( jainknowledge.com)

Takeaway

So, the usual answer for Parakh is Aadityanag, but the exact gotra can vary by family branch and local community record. ( jainknowledge.com)