1. Microphysogobio longidorsalis.
This fish lives in the areas of Dae-Dong, Han, and Kum Rivers of the Korea peninsula. The fish herbivore: it usually likes diatoms and green living under the sand or pebbles in clear water. It has a rather big dorsal fin relative to its size. The fish is blueish brown on the lower back and has an indistinct dark belt in the center.

2. Gnathopogon majimae.
Found in the rivers and streams of the southwestern and southern Korea. This fish inhabits the shallow part of ponds or swamps. It spawns around May-June on water plants. Its head is rather small and its barbel is short, so that it almost looks like a little bumo. The fish is about 10cm in length (about 4 in) and has a slim and long shape. The color is dark in the dorsal area but it is close to white in the abdominal area.

3. Therapon oxyrhchuns.
This fish is found in the central coastal area and in the streams in the lower half of the Korean peninsula. It is distributed as far as the South China Sea as well. Its length is about 30cm and has four dark gray lines on the sides. The fish has a shape of an elongatoned elipse. Its color is grayish blue, however, its tone is lighter in the abdomen.