How can you describe a heterocercal tail?

A heterocercal tail is a type of tail fin found in some fish species, such as sharks, sturgeons, and certain primitive bony fish. It is characterized by a dorsal lobe that is longer than the ventral lobe, creating an asymmetrical appearance. The longer dorsal lobe provides additional surface area for propulsion and stability in the water, allowing these fish to navigate and maneuver effectively. The heterocercal tail is generally considered a primitive trait among fish species, as it is believed to have been the predominant tail structure in early fish ancestors.