Yes, he feels cold. My teeth are not sensitive in a useful way!
He does not look quite like the other items displayed but having seem them, I am prepared to concede that he is, carved from rock. The like of which I have not seem before, other than having encountered 'Blue John' in a previous life.
The maker got him just right, apart from the sinous suggestion of movement, in certain lights he is ordinary, of earthy/marine colours. When the light hits there is the most surprisingly intense pale blue lights up, just as fish scales do.
I think he is a carp and I am wondering in which country he came from but that is another quest and a different Board perhaps!
Thanks for your help and I know what kind of work benches I want in my kitchen next.