Some light fish (4)
This clue is a double definition.
'some light' is the first definition.
(ray is a kind of light)
'fish' is the second definition.
(I know that ray is a type of fish)
(Other definitions for ray that I've seen before include "Second note for the flat fish" , "Flat fish or sun beam" , "Beam; flat-bodied fish" , "bit of sunshine" , "Lindwall" .)
I believe this is a double definition.
'some light' is the first definition.
(I've seen this before)
'fish' is the second definition.
(I've seen this before)
(Other definitions for rays that I've seen before include "we hope to catch occasionally out of the blue?" , "shafts" , "Fish with wing-shaped fins and long tails" , "Single lines of light" , "Beams of sunlight" .)