Question

is there a sentence fragment? when it comes to seafood, americans arent always eating what they think they are. according to an fda report based on dna analysis of fish that are frequently misidentified.

Explanation:

The second part "According to an FDA report based on DNA analysis of fish that are frequently misidentified." is a fragment as it lacks a main - clause verb. It starts with a prepositional phrase and is a dependent clause.

Answer:

yes