Charge about right for fish (5)
I believe the answer is:
troll
'for fish' is the definition.
(trolling is a type of fishing)
'charge about right' is the wordplay.
'charge' becomes 'toll' (toll is a kind of charge).
'about' indicates putting letters inside.
'right' becomes 'r' (common abbreviation).
'toll' placed around 'r' is 'TROLL'.
(Other definitions for troll that I've seen before include "Unsocial social media user" , "Ugly dwarf or giant" , "Grotesque dwarf" , "Fish; goblin" , "Ugly creature of Norse myth" .)