Top for salmonids, asp, perch, sea bass and sea trout. The Tricoroll Ryushin was extended by two smaller models. Both retain the mechanical properties of the Ryushin, they sink quickly and reach deeper water layers quickly. The running behaviour is more agile, jerkier and also seduces cautious salmonids by special vibrations. Diving depth: 0.5-1.2 m. Sinking.