Yep it's a...ummm...wild Norwegian golden kipper, perhaps caught in a fjord?..
...At first glance he looks like he's resting, or perhaps stunned or pinning...
...but I hate to break it to you...actually I think 'e's stone dead! 'E's bleedin' demised! Passed on! This kipper is no more. He's ceased to be! 'E's expired and gone to meet 'is maker! E's a stiff! Bereft of life, 'e rests in peace! If you hadn't super glued him to the plate 'e'd be pushing up the daisies! 'Is metabolic processes are now 'istory! 'E's off the pond weed! 'E's kicked the bucket, 'e's shuffled off 'is mortal coil, run down the curtain and joined the bleedin' choir invisible!!
...In all honesty I think you'd be better off burying him...or at the very least eating him with some chips and mushy peas...