How are the pectoral, pelvic, dorsal, anal, and caudal fins arranged on a trout?

In a typical trout, the fins are arranged to provide stability, steering, and locomotion. Their placement is as follows:12

• Pectoral fins: These paired fins are located on the ventral surface, positioned directly posterior to the head.12
• Dorsal fin: This fin is situated midway along the body on the dorsal surface.1
• Pelvic (ventral) fins: These paired fins are located on the ventral surface, positioned directly beneath the dorsal fin.12
• Adipose fin: A small, fleshy fin located on the dorsal surface between the dorsal fin and the tail.1
• Anal fin: This single fin is positioned on the ventral surface, located beneath the adipose fin.1
• Caudal fin (tail): Located at the posterior end of the body, this well-developed fin is essential for providing the power for swimming.12