Rishika in Indo-Aryan languages – and especially within the context of Hindu religious texts – may refer to different things:
A female rishi, an inspired poet of Vedic hymns Rishikas, a possibly-mythical tribe of Central Asia and South Asia, which is mentioned in historical and religious texts Rishika kingdom, an ancient kingdom inhabited by the Rishikas
See also
Rishi (disambiguation) Vṛścika, a month in the Indian calendar