It migrates from salt to fresh water to spawn (6)
I believe the answer is:
salmon
(Other definitions for salmon that I've seen before include "Oddly, Mal's no fish" , "high-jumper" , "Food fish; pink shade" , "See 3" , "Sockeye, the swimmer" .)
I believe the answer is:
salmon
(Other definitions for salmon that I've seen before include "Oddly, Mal's no fish" , "high-jumper" , "Food fish; pink shade" , "See 3" , "Sockeye, the swimmer" .)