Not in clear need, worried about fish (7)
I believe the answer is:
encoded
'not in clear' is the definition.
The answer and definition are not the same part of speech. However, adjectives and past participle verbs can occasionally mean the same thing.
'need worried about fish' is the wordplay.
'worried' indicates anagramming the letters.
'about' indicates putting letters inside.
'fish' becomes 'cod' (type of fish).
'need' is an anagram of 'ened'.
'ened' placed around 'cod' is 'ENCODED'.
Can you help me to learn more?
(Other definitions for encoded that I've seen before include "as secrets are dispatched?" , "formed in a difficult-to-understand way" , "In cryptic version" , "Deed con (anag.)" .)