The FCH-16 Fry Counting Head is a single unit containing 16 small counting tunnels. The tunnels are arranged in two rows of eight, spaced according to tunnel size. Each tunnel has a smooth-tapered entrance to prevent abrasive damage to fish. The FCH-16 is 3 inch high by 12 inch wide for 1/4 inch tunnels. Size varies with tunnel diameters which are available from 0.125 inch to 0.75 inch. The FCH-16 is supplied with 15 feet of cable and a connector for SR-1601 Fish Counter.