Crossword Genius

Insect that eats paper, coins and seafood (10)

Ross

I believe the answer is:

silverfish

I'm a little stuck... Click here to teach me more about this clue!

'insect that eats' is the definition.
'silverfish' can be an answer for 'insect' (silverfish is a kind of insect). I am not certain of the rest of the definition.

'paper coins and seafood' is the wordplay.
'paper coins' becomes 'silver' (I can't explain this - if you can you should give a lot more credence to this answer).
'and' means one lot of letters go next to another.
'seafood' becomes 'fish' (fish is a kind of seafood).
'silver'+'fish'='SILVERFISH'

Can you help me to learn more?

(Other definitions for silverfish that I've seen before include "Household insect" , "Domestic insect, bristletail" .)

I've seen this clue in the Sydney Morning Herald.
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