This paper reports a survey in 37 restaurants in a SE USA city analysing 47 fish dishes on the use of Pangasius, a Vietnamese catfish. Twenty seven percent of declared American catfish dishes, 22% of grouper dishes, and 67% of dishes using just the description "fish" were substituted with Pangasius.This indicated the widespread use of Pangasius in restaurant catering either for economic and/or fraudulent reasons.
Read the abstract at: http://www.sciencedirect.com/science/article/pii/S0956713516300172
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