Chunghwa Post previously issued a set of stamps on Taiwan fishes on March 10, 2011. It is now following up with another set of four stamps, featuring Formosania lacustre, Tanakia himantegus, Channa asiatica, and Sinogastromyzon puliensis. The designs follow: 1. Formosania lacustre (NT$5): Measuring about 6 to 12 centimeters long, this species is slender and cylindrical, with a flat dull triangular head, a slightly arced oral fissure, and a pair of big and horizontally orientated pectoral fins.
2. Tanakia himantegus (NT$5): Measuring about 3 to 9 centimeters long, this species has a flat, oval body and a small mouth. Its body is covered with cycloid scales. Its back is silvery white with a tinge of blue3. Channa asiatica (NT$12): Measuring about 10 to 25 centimeters long, this species has a cylindrical-shaped body, which becomes increasingly flat towards the tail. Its head is wide and big with a large oral fissure. Eight to eleven dark-brown stripes are featured along the side of its body, and two black lines are behind the eye. 4. Sinogastromyzon puliensis (NT$25): This species has a long body, measuring about 4 to 9 centimeters. The front portion of its body is flat top and bottom, whereas its tail is flat on its sides. Its oral fissure is arced.