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Luke Nguyen’s Tilapia Fish Salad, from his cookbook "From China to Vietnam," is a masterclass in allium layering, using both fresh and fried red Asian shallots, as well as fresh and fried garlic.

Although red snapper is faring poorly in the wild, replacing it with tilapia is not helping snapper conservation.

Several examples of mislabelling involved substituting an expensive product for a cheaper species: tilapia for snapper, rainbow trout for Atlantic salmon.

For instance, a cheap fish like tilapia may be given the name of a more expensive fish, like red snapper, or an endangered species might be passed off as a better-faring alternative.

Thailand had experienced outbreaks of blackchin tilapia in the past, but none has been as widespread as this most recent episode.