The two of us saving money after chopping head off fish (6)
I believe the answer is:
wrasse
'fish' is the definition.
(wrasse is a kind of fish)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for wrasse that I've seen before include "Bright marine fish" , "Swears about the tropical marine fish with strong teeth" , "Type of fish" , "Fish - swears (anag)" , "catch in the deep" .)