What specialized structure acts like stabilizers on an airplane wing, located on either side of the caudal peduncle?

Answer

Caudal keel

Located on both sides of the caudal peduncle—the tapered section connecting the body to the tail—is a pronounced caudal keel. This physical structure serves a critical hydrodynamic function, explicitly compared to stabilizers found on an airplane wing. Its primary role is to aid the Yellowfin tuna in achieving and maintaining its high-speed swimming capability through the water.

What specialized structure acts like stabilizers on an airplane wing, located on either side of the caudal peduncle?
animalTunaoceanfishcharacteristic