Sushi bar layout (4)
I believe the answer is:
eels
'sushi bar layout' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for eels that I've seen before include "Else (anag.)" , "Fish (that may be jellied)" , "Devious types" , "Long fishes" , "Slender fish" .)