Inclination to catch some fish? (5)
I believe the answer is:
angle
I believe this clue is a triple definition!
'inclination' is the first definition.
(thesaurus)
'to catch' is the second definition.
(angle can mean to fish)
'some fish?' is the third definition.
(angle can mean to fish)
(Other definitions for angle that I've seen before include "may be right" , "Perspective" , "Fish with a rod" , "old invader" , "possibly obtuse" .)