Crossword Genius

Cooked fat eel and raw, small crustacean (5,4)

Ross

I believe the answer is:

water flea

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

'small crustacean' is the definition.
'water flea' can be an answer for 'crustacean' (water flea is a kind of crustacean). I am not certain of the 'small' bit.

'cooked fat eel and raw' is the wordplay.
'cooked' indicates an anagram (letters cooked into a new form).
'and' says to put letters next to each other.
'fat'+'eel'='fateel'
'fateel' after 'raw' is 'rawfateel'.
'rawfateel' with letters rearranged gives 'WATER FLEA'.

Can you help me to learn more?

(Other definitions for water flea that I've seen before include "Tiny crustacean" , "Tiny creature" , "Common name for Daphnia" .)

I've seen this clue in The Times.
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