CLARKSBURG, W.Va. (WBOY) — This fish is so rare it was thought to be extinct. That was, until 1980, when it was discovered in West Virginia. If you've been fishing for a while, you're probably familiar with bass, bluegill, walleye and several other species of fish, but chances are you've never encountered the tiny diamond darter, which is now found only in the Mountain State. According to the Center for Biological Diversity website the diamond d…