The White-spotted Wedgefish above is native to the Indo-Pacific Oceans from East Africa to Taiwan and Australia. It grows to some 3 metres (10 feet) long. Often called the White-spotted Guitarfish, the Rhynchobatus genus are technically Wedgefish, related to the Guitarfish. The first dorsal fin is between the pelvic fins on wedgefish and much nearer the tail on guitarfish. It is also correctly called the Bottle-nosed Wedgefish, but its common name of White-spotted, shared with several other relatives, persists.

Two such relatives are the Giant Guitarfish, Rhynchobatus djiddensis, and the Eyebrow Wedgefish, Rhynchobatus palpebratus, both also called the White-spotted Guitarfish/Wedgefish, the first native to the western Indian Ocean, Red Sea and Arabian Gulf and the latter to coastal waters off northern Australia. They also grow to 3/2.6 metres but have far more rows of white spots. Juveniles of all have a black spot above the pectoral fins which fades to a dusky ring on adults. The djiddensis has a shadow bar on its head between the eyes which no other relative has. The australiae, above, usually has a row of 3 white spots above the shadow ring and two below; all other spotted relatives have a ring of 3-5 white spots encircling the black shadow or eyespot. All are critically endangered, especially by fishing, particularly for fins for the Asian shark fin soup market.

Two smaller relatives have similar common names: the White-spotted Guitarfish, Rhinobatos albomaculatus of the eastern Atlantic, growing to 75cm long and the Spotted Guitarfish, Rhinobatus punctifer of the Red Sea and Persian Gulf, reaching 90cm.

These above are believed to be Rhynchobatus palpebratus of coastal waters off northern Australia, growing to 2.6 metres long. The underside shows a black chin but the Black-chinned Guitarfish is a smaller relative in another genus. As mentioned further above, the name "White-spotted Wedgefish/Guitarfish" is given to several others in this and related genera.

The "Eyebrow" name relates to dark markings above the eyes. The Bottlenose has a rounder snout and the Eyebrow a more pointed snout. The Eyebrow doesn't usually have white spots on the pectoral fins (unlike the Bottlenose) but has white spots along the body beyond the pelvic fins (unlike the Bottlenose).