The Black Bivisible is a classic fly pattern designed for visibility and versatility, making it ideal for various lighting conditions and backgrounds. It features contrasting hackles, typically white and black, allowing it to stand out against both light and dark waters. This fly mimics several types of small insects and is particularly effective in choppy waters where trout are looking for easy prey. Use it with a dry fly technique, allowing for gentle casts and natural drifts to entice surface-feeding fish.