An ordinary person, esp regarded as a victim of existential perversity: The poor fish is damned if he does and damned if he doesn't/ They've tricked you again, you poor simp (entry form 1919+, variant 1900+)
Why, you poor fish, said the former witheringly, you sure will be a full-sized nut if you ever live to grow up.
Down to the depths, along with his dupe, go the wife and children of the poor fish.
And among the Attic writers there is a proverb, "No baion for me; he is a poor fish."
The poor fish claps his hand to his forehead and cries 'Gadzooks!
The poor fish, after some hesitation, again dived into the gulf and was never more heard of!
“I have eaten so much that I cannot swim,” replied the poor fish.
He was a poor fish, Gashwiler; a country storekeeper without a future.
The thing that matters is that you are talking piffle, you poor fish.
He did not cast it far enough, and the poor fish remained on the bank.
Some other poor fish, waiting as patiently as we to be digested by the Shark.