does anyone know why my male 6 month old pup smells of bad fish i thourght it was his wee at first but after bathin him she still stinks of fish his breth and all over ,the garden even smells of him

Anal glands, could need emptying or if he has been over excited or frightened hemay ahve spontaneously emptied them, and if he cleaned himself then his breath would smell too. 

Also is his food fish based and has he perhaps been recycling it?  If it is of course any poo left in the garden woudl smell of it.

what do u think i should do will it go away by its self or should i go the vets he dosent get chance 2 eat his poo i clean the garden straight away after hes been ive been feedin him wagg complete since i got him cos he likes it and thats what he was fed on by the breeder my other dogs have iams (he does pinch it some times)