Eseta, debone fish properly to avoid taking risks (2,2,3,4,4)

I believe the answer is:

be on the safe side

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'eseta debone fish properly to avoid taking risks' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'eseta debone fish properly to avoid taking risks' is the wordplay.
'eseta debone fish' can be anagrammed to 'BE ON THE SAFE SIDE'.
But, I'm not sure how this is indicated.

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

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