Verse 7

एतावताथ कालेन तद्रसातलमण्डलम् ।बभूवाराजकं तीक्ष्णं मात्स्यन्यायकदर्थितम्

In plain words

Now, by this much time, that whole realm of Rasātala had become kingless, harsh, and afflicted by the law of the fish.