Common names
Freshwater whipray

Short Description
Original diagnosis by LAST & MANJAJI-MATSUMOTO, 2008 [3353]: A species of Himantura distinguished by a combination of the following features: disc subcircular, snout tip to axis of maximum width 41–44% DW; anterior disc margin truncated, almost transverse; preorbital snout obtuse, angle 120–121°, with a distinct apical lobe; preorbit long, length 27–28% DW, 2.1–2.2 times interorbital length; internasal distance 1.9–2.1 in prenasal length, 3.2–3.6 times nostril length; preoral snout length 3.3–3.4 times mouth width, 2.4–2.6 times internarial distance; lateral apices broadly rounded; orbits very small, protruded slightly; denticles along mid-trunk relatively sparse, band without well-defined margin, mid-scapular denticle small or inconspicuous; tertiary denticles present; disc uniformly pale brown or greyish brown dorsally; ventrally, disc whitish with broad, dark marginal bands, their inner margins irregular and bordered with dark blotches; marginal bands slightly broader posteriorly, their maximum width subequal to mouth width; pelvic-fin tips dark on ventral surface; tail dark brown to blackish dorsally, whitish ventrally forward of sting base, almost uniformly black beyond sting; propterygial radials 73–78, 2.7–2.9 times the number of mesopterygial radials; total vertebral segments 120–121.

Distribution
Oceania: northern Australia. [3353]

Size / Weight / Age
124 cm DW (male/unsexed; [3353])

Habitat
benthopelagic; freshwater; brackish; marine; depth range 1 - 4 m [3353]

Dentition
Teeth small, broadly suboval to rhomboidal, in quincunx; subequal in size in upper and lower jaws; with prominent horizontal ridge and groove. Tooth rows in upper jaw of paratype CSIRO H 6657–01 about 37, in lower jaw about 45. [3353]

Remarks
shark-references Species-ID=14660;