View across lake -- rising fish (4)
I believe the answer is:
eels
'fish' is the definition.
(I've seen this before)
'view across lake rising' is the wordplay.
'view' becomes 'see' ('see' can be a synonym of 'view').
'across' indicates putting letters inside.
'lake' becomes 'l'.
'rising' says the letters should be written backwards (going up in a down clue).
'see' enclosing 'l' is 'slee'.
'slee' in reverse letter order is 'EELS'.
(Other definitions for eels that I've seen before include "Snakes found in lees" , "Jellied --, traditional dish" , "Else they're fish" , "Elongated fishes" , "Fish (that may be jellied)" .)