It’s for the baby fish I catch (8)

I believe the answer is:

bassinet

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

'it's for the baby' is the definition.
I can't tell whether this defines the answer.

'fish i catch' is the wordplay.
'fish' becomes 'bass' (bass is a kind of fish).
'catch' becomes 'net' (net can mean to catch).
'bass'+'i'+'net'='BASSINET'

Can you help me to learn more?

(Other definitions for bassinet that I've seen before include "Baby's cradle or pram" , "Type of cradle" , "Hooded basket for a baby" , "Wicker cradle" .)

I've seen this clue in the Evening Standard.

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