The pelvic fins are small, no more than a fifth as long as the disc width.

The tail is thick at the base and measures 1.5-2 times longer than the disc width.

The mottled eagle ray can grow up to 78 cm in disc width.

There is a stinging spine on the upper surface of the tail, and a fin fold underneath measuring 60-67% the disc width.

The tail measures no longer than 1.5 times the disc width, and tapers to a filament towards the tip.

The cylindrical, tapering tail lacks fin folds and measures slightly longer than the disc width.

Younger individuals have proportionately longer tails (measuring up to three times the disc width) than adults.

The tail is whip-like and measures 75-122% of the disc width, bearing 1-3 stinging spines on the upper surface.

The whip-like tail is no longer than twice the disc width and bears 1 (rarely 2) stinging spines on the upper surface.

One, rarely two serrated stinging spines are dorsally placed about a third of a disc width back from the tail base.