How to Identify Honeycomb Stingray

To identify Honeycomb Stingray (Himantura uarnak), look at these key features.

Physical Characteristics

Body shape

flat

Coloration

Dorsal surface typically light brown, yellowish, or grey, covered with a dense pattern of dark brown to black spots, rings, or ocelli that often coalesce to form a reticulated or honeycomb-like pattern. This pattern is more distinct in juveniles and can become more diffuse or mottled in older, larger individuals. Ventral surface is white.

Scale type

placoid

Mouth position

inferior

Distinctive features

Large, flattened, disc-shaped body (disc width up to 2 meters), Extremely long, whip-like tail, often 2-3 times the disc length, One or more venomous serrated spines on the dorsal surface of the tail, Distinctive honeycomb or reticulated spot pattern on the dorsal disc, Small, widely spaced denticles (tubercles) on the dorsal surface, becoming more prominent towards the midline in adults

Dorsal fin

Absent

Tail fin

Long, slender, whip-like, without fin folds; bears one or more venomous serrated spines.

Pectoral fin

Large, flattened, forming the disc.

Distinctive fins

No distinct dorsal or caudal fins; pelvic fins are small and located at the base of the tail.

Identification Tips

1. 1

   Dorsal Pattern

   Look for the characteristic honeycomb or reticulated pattern of dark spots and rings on a lighter background. This is the most reliable identifier, especially in juveniles.

2. 2

   Tail Length

   The extremely long, whip-like tail, often 2-3 times the disc length, is a key feature. Note the absence of fin folds on the tail.

3. 3

   Size

   Adults can reach a very large size, with disc widths up to 2 meters, making them one of the larger whipray species.

4. 4

   Denticles

   While not always visible, the presence of small, widely spaced denticles on the dorsal surface, particularly along the midline, can aid in identification.

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