Salt ten dead fish (6)

I believe the answer is:

iodide

'salt' is the definition.
(iodide is a kind of salt)

'ten dead fish' is the wordplay.
'ten' becomes 'io'.
'dead' becomes 'd'.
'fish' becomes 'ide' (I've seen this before**).
'io'+'d'+'ide'='IODIDE'

(Another definition for iodide that I've seen is " Compound".)

I've seen this clue in The Independent.

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