Fishy edition of Keats (5)
I believe the answer is:
skate
'fishy' is the definition.
(type of fish)
'of keats' is the wordplay.
'of' is an anagram indicator (the answer comes from or 'of' the letters).
'keats' with letters rearranged gives 'SKATE'.
'edition' is the link.
This may not be right. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for skate that I've seen before include "current collector" , "Ice-rink shoe" , "Large marine fish" , "Runner" , "Complete, 19-less" .)