Wait a minute, before envying fish. Yes, it has unlimited waters but danger lurks as nets opening mouths of death at places unexpected (Imagine what a fish is once out of water)
Ending up in unbreakable nets is the salvation of a lucky fish! (The humans decided that) Fishermen toil under star light, to ensure three square meals underdog's life under the dog star is glorified as sacrifice, romanticized as adventure, a stereotype without any grip on one's own destiny is sustained for ever as a myth.
Someone somewhere laughs all the way to bank carrying stalks of currency notes smelling raw fish and sweat.