An curved arrow pointing right. Fish maw — the swim bladder of a fish — is one of the most expensive dried-seafood products in the world. A Chinese delicacy, it can fetch $450 to $1,000 per ...

Imagine a fish worth more than a small fortune. The Totoaba, a creature of the Gulf of California, holds the dubious distinction of being the world’s most expensive fish, with a price tag exceeding $8 ...