The tail measures 71-91% of the disc length, has a flattened oval cross-section, and terminates in a low leaf-shaped caudal fin.

Its short and thick tail bears two dorsal fins and terminates in a triangular caudal fin.

The tail is stout, bearing a serrated stinging spine, and terminates in a rounded caudal fin.

The head is furnished with appendages, and the tail terminates in a point.

The tail terminates in a long, low, leaf-shaped caudal fin.

The tail terminates with a black brush.

The tail may also have slight ridge of skin running along each side, and terminates in a very short, deep, leaf-shaped caudal fin.

The sinewy tail terminated in black-tipped spikes, like the ones on the head, only stiff and hard.

The tail terminates in a fairly large, triangular caudal fin about as long as wide, with rounded corners.

The tails terminate in anchor-like structures.