Fish for Bikie's wear (7,6)

I believe the answer is:

leather jacket

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

'fish' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'bikie's wear' is the wordplay.
'bikie's' becomes 'leather' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'wear' becomes 'jacket' (jacket is a kind of wear).
'leather'+'jacket'='LEATHER-JACKET'

'for' is the link.

Can you help me to learn more?

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

Want a hint initially instead of a full solution? Install my app