The fish is never free from anxiety, since big fish are always eager to eat the small fish. All living entities are eaten by bigger living entities. This is the way of material nature.
The Lord is harder than the thunderbolt for the wrongdoer and softer than the rose for the faithful.
Srimad Bhagavatam 3.3.13,
Lakshmi, the goddess of fortune, is called chanchal. Use it in worship of Lord Krishna.
The child cries to have toys, but one who can cry for the Lord in love is certainly successful in the line of devotional service.