Text 31

पवनः पवतामस्मि रामः शस्त्रभृतामहम् ।
झषाणां मकरश्चास्मि स्रोतसामस्मि जाह्नवी ॥३१॥

pavanaḥ pavatām asmi
rāmaḥ śastra-bhṛtām aham
jhaṣāṇāḿ makaraś cāsmi
srotasām asmi jāhnavī

Translation:

Of purifiers I am the wind, of the wielders of weapons I am Rama, of fishes I am the shark, and of flowing rivers I am the Ganges.

Purport:

Of all the aquatics the shark is one of the biggest and is certainly the most dangerous to man. Thus the shark represents Krishna.