The Tungsten Bead Head Stonefly is another popular artificial fly used in fly fishing. This fly is designed to imitate the nymph stage of a stonefly, which is a common food source for many fish species, especially trout. The Tungsten Bead Head Stonefly Nymph has a heavy bead that helps it sink quickly to the bottom of the river or stream. The bead also adds a bit of flash to attract fish. The design, size, and coloring of this fly mimic the appearance of a stonefly nymph. Stoneflies are a significant part of the diet for many fish, making this an effective choice for many fishing situations. This type of fly can be used in a variety of fishing conditions and is effective for many species of fish, including trout, bass, and others. To use this fly, you would typically cast it upstream and let it drift down with the current, mimicking the natural movement of a stonefly nymph in the water. The weight of the tungsten bead head helps get the fly down in the water column quickly to where fish are most likely to be feeding.