For spring through autumn fishing, I don’t think I could do better than fishing a size 16 black ant. Big or small water, tailwater or freestone, I seem to always catch fish on a black ant. Fish it dry if fish are looking up or let it sink if they’re feeding down the water column. Once in the midst of a Green Drake hatch in Colorado, I tied one on and had a huge trout come up and annihilate the ant pattern when I wouldn’t get a rise on any drake patterns I had.