The study was performed by a conservation group called Oceana, and is based on 143 fresh seafood samples.
Of those, sushi lovers should take note that 100 percent of the anonymous sushi bars investigated had fraudulent fish. That makes 16 out of 16 restaurants.
Most of the fraud came in the form of fish substitutions — Tuna and snapper were the two kinds of fish most commonly found to actually be substitute fish.
Oceana used forensic DNA testing to determine the breed of fish. For the full study visit the Oceana website.