Crossword Genius

Amphibian now ruining Sydney suburb (7)

Ross

I believe the answer is:

newtown

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

'ruining sydney suburb' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'amphibian now' is the wordplay.
I cannot quite see how this works, but
'amphibian' could be 'newt' (newt is a kind of amphibian) and 'newt' is found within the answer.
an anagram of 'now' is 'own' which is present in the answer.
No letters remain.
This explanation may well be incorrect...

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