Crossword Genius

Indignation after making the first daughter good bait for those down here (7)

Ross

I believe the answer is:

gudgeon

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'indignation after making the first daughter good bait for those down here' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.

This is all the clue.

Can you help me to learn more?

(Other definitions for gudgeon that I've seen before include "Swimmer" , "Small freshwater fish" , "angler's bait" , "Small carp-like fish" , "Fish, or person easily cheated" .)

I've seen this clue in The Independent.
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