It eats fish (possibly plaice, by the way) (7)

I believe the answer is:

pelican

I'm a little stuck... Click here to teach me more about this clue!

'it eats fish' is the definition.
The definition suggests a singular noun which matches the answer.

'possibly plaice by the way' is the wordplay.
'possibly' is an anagram indicator.
'by' means one lot of letters go next to another.
'the way' becomes 'n' (Compass direction - North).
'plaice' with letters rearranged gives 'pelica'.
'pelica'+'n'='PELICAN'

Can you help me to learn more?

(Other definitions for pelican that I've seen before include "Aquatic bird with pouch" , "Long-billed aquatic bird" , "Seabird with a large pouched bill" , "Large waterbird" , "Nice pal (anag)" .)

I've seen this clue in the Evening Standard.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.