In Uganda, fishers compete for Nile perch in Lake Victoria and ship them to China for extremely high prices. More from So Expensive Fish maw — the swim bladder of a fish — is one of the most ...

some fish maw smugglers track fishermen with the aim of buying fish maws. To conceal their actions, fishermen open up the bowels of Nile Perch fish, remove the maws for sale, and throw away the ...