Category 3 Prince of UV - Black Tungsten Bead

Two white biots, and nothing in the river looks like that

The white goose biots laid along the back are what make a Prince a Prince, and they are the reason it works: no natural insect carries a pair of bright white marks like that, yet the pattern has been catching fish since Doug Prince popularised it in California decades ago. This version adds a purple body with a high UV content, which gives it something extra to say in water carrying a bit of colour. Fish it deep on the point.