Ruhi fish have even/paired and odd/unpaired fins. Each fin has bony fin rays. It has five types of fins.
1. Pectoral fins: Kanko has a pair of pectoral fins on its back. It has 16-19 fin rays. It helps the fish rise to the top of the water.
2. Surface fins: There is a surface fin on the surface of the body. It has 14-16 fin rays. It helps the fish to turn and stop.
3. Class fins: There is a pair of class fins in the middle part of the body. It has 7-9 fin rays. This helps the fish move up and down and stop.
4. Anal fins: There is an anal fin behind the anus on the base of the body. It has 4-7 fin rays. It helps keep the fish stable.
5. Caudal Fin: There is a caudal fin behind the tail. It is bisected and homocircular. It has 19 fin rays. It acts as the main locomotor organ of the fish. Dr. Siddiq Publications