Insect that eats paper, coins and seafood (10)
I believe the answer is:
silverfish
'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" .)