I did my homework and called the G&F in Sheridan. As strange as this seems it is not legal to darkhouse spear for any type of fish in the state of wyoming.
It is legal to do the following:
Shoot fish with a speargun-if your entire body is fully submerged in water.
Bow fish for non-gamefish. (carp, shiners, suckers)
Does this seem a little unfair to anyone else? A guy with a snorkel can shoot fish all day, but it is not allowed to spear a fish on the ice. I guess tip-ups it is then....haha.