Officers want to identify the Asian man who they say was aged between 50 and 60.
The man had three scars on his body but these are most likely from surgery and are not connected to his death, police said.
The body was discovered in the canal off Kensington Road on Saturday morning.
The death is being treated as unexplained and despite extensive enquiries officers have been unable to identify him or inform his family.
He has been described as clean shaven and wearing a black shirt with black trousers and a grey jumper.
Anyone with information is asked to call police on 101 quoting CAD 2948/24Jul.
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