Pectoral fin location and function?

Pectoral fin location and function?

• A. Located on the top of the head; used for steering.
• B. A pair of fins on the sides of a fish, used for steering and balance.
• C. Located on the underside; aids in stability.
• D. The tail fin; used for propulsion.

Answer: (B)

Pectoral fins are a pair of fins located on the sides of a fish, near the gill area. They primarily help with steering and balance, allowing precise turns, braking, and fine control of orientation in the water. They’re not placed on the top of the head, nor on the underside as the main stabilizers, and they’re not used for propulsion—the tail fin does that by pushing water backward to move the fish forward. So the description of fins on the sides used for steering and balance matches how pectoral fins function.