I have this one in the freezer and it is a cotton mouth with very long fangs , will be mounting it for the Miami Museum of Science as you said Cotton Mouth over 4 feet are rare.

The water down here is very heavy with yellow tanning that might be why is yellowish, it is not a florida water snake, they don't get that thick down here.

I certainly would like to get some copperhead skins for dressing a bow,there are none down here.