Final answer:
The sentence has a dangling modifier.
Step-by-step explanation:
The sentence "Hungry for dinner, the surface is where Gert the goldfish waited in anticipation of food flakes" has a dangling modifier.
A dangling modifier is a phrase that is intended to modify a noun or pronoun but is not placed next to the word it is supposed to modify. In this case, the phrase "Hungry for dinner" is meant to describe Gert the goldfish, but it is incorrectly placed at the beginning of the sentence and does not have a clear connection to the subject, causing confusion for the reader. To correct this, the sentence could be rewritten as "Gert the goldfish, hungry for dinner, waited in anticipation of food flakes on the surface."