Husband losing way — something fishy here! (7)
I believe the answer is:
herring
'something fishy here' is the definition.
(herring is a type of fish)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for herring that I've seen before include "Saltwater fish" , "Small silvery sea-fish" , "Fish, often kippered" , "Fish that's kippered" , "It's certainly fishy!" .)