Do a search under fiberglass reproduction mounts. Graphite fiber is more expensive than glass and the greater strength of graphite isn’t warranted in a mount.
I had a tiger muskie replica done by LAX out of Conover, WI in 2020. He’s since raised his prices and its not cheap, but the work he does is the best in the business. Last fall he did a skin mount for the new state record pure strain muskie that was caught out of Mille Lacs. All he needs are a few decent photos to do it. You can either have it shipped, pick it up in person at his shop (which is quite a ways from Rochester), or you can pick it up at a muskie expo in the spring. I picked mine up at a muskie expo in Wausau, WI. His specialty is pure strain muskies but he does a fair amount of tigers and northern pike too.
I have had 2 walleyes done by Fibertech Productions and have a northern coming next month from LAX Reproductions
One thing to ask whoever you go thru is how much the background will cost. It will depend on the style, type and detail and can sometimes cost almost as much as the fish (not that this is bad as it can really add to the overall replica)
I have had a skin mount and a few replicas done by Artistic Anglers, they do great work and plan to use them again. They have done a pike, lake trout, speckled trout, steelhead and a bonefish for me.