Fictional captain owned landing bay (7)
I believe the answer is:
haddock
'bay' is the definition.
The answer and definition can be both animals as well as being singular nouns.
Maybe there's a link between them I don't understand?
'fictional captain owned landing' is the wordplay.
I cannot really see how this works, but
'owned' could be 'had' ('have' can be a synonym of 'own') and 'had' is located in the answer.
'landing' could be 'dock' (dock is a kind of landing) and 'dock' is found in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for haddock that I've seen before include "White fish" , "Fish, often smoked" , "N. Atlantic food fish" , "Edible fish like small cod" , "Popular food fish" .)