With a freshly caught fish at hand which is to be made into a medallion the process is about as follows: Before skinning lay it flat on one side on a piece of soft wood board of the proper thickness and mark out its outline. Though only one side of the mounted fish shows, a little more than precisely one half is preserved in order to include the tail, the vertical and dorsal fins and also to give an appearance of rotundity.
Leaving this margin all around, the skin is cut away from the side which, on account of damage or other reason, is selected for the back. The head must be cut through with chisel or a fine saw. Severing the bones at the base of the fins with the scissors the whole body is removed by cutting the spinal column at its junction with the skull.
In skinning fish you will note a white layer, like tin foil, which gives the fish its silvery color. Do not disturb this if possible. Remove all surplus flesh, cut away the gills and interior of head and if at all greasy (what fish is not) treat to a bath in gasoline. Use absorbent, sawdust or meal to remove oily gasoline, drop in alcohol or formaldehyde solution while the body is prepared. To do this cut out the board by the outline on it with a short bevel on the back and the other side the full shape of the fish. The whole form is slightly diminished, however, to allow for a coating of clay. This is applied after the skin has been removed from the solution and poisoned.
When a good fit is secured the skin is fastened in place by sewing from top to bottom, across the back board, or if large, nailing the edges to the board. The fins which have been kept wet are to be spread; each clamped with two pieces of pasteboard. On very large fish spring clothes pins may be used to clamp the fins, for small ones pins forced through both thicknesses, outside the fins.
Sponge the fish off carefully to remove all clay or other dirt and give it a coat of rather thin white varnish. This prevents the scales curling up and to some extent fixes or restores the colors of the fish.
The eye is set after the fish is dry and if it does not fill the socket, model around it with wax or paper pulp. Fish eyes vary so greatly that to strictly copy nature you had better use the uncolored fish eyes, painting the back with suitable oil colors with a coat or two of shellac over it to prevent the clay in which it is set from affecting the paint. The final painting of a mounted fish which is necessary to complete the best work is a task for an artist. If a specimen in the flesh (living if possible) is at hand this is made easier. All fish skins collected should be accompanied by color sketches if possible.
All silvery fish should be coated with size and nickel leaf over their entire scaly surface. On this ground paint with thin oil colors. If the paint is not too thick the desired silvery sheen will show through. If the whole fish is dark no leaf is needed and in some cases the upper part of the body requires a gold ground with the nickel leaf on the silvery under parts. Japanese gold paint or something similar will do for a golden ground.
The finished medallion may lie flat in a case, be fastened on the face of a panel, or hung by a loop at the mouth or center of back. Panels of natural wood are a favorite mount and framed panels covered with plush or the imitation pebbled upholstery leather.
Another method of mounting medallions is to take a plaster mold of the display half of the fish and from it make a plaster cast like the back board. This is sandpapered down to allow for the skin and gouged out at the bases of the fins and tail. The head too is not reproduced on the cast.
