How to Identify Round Stingray

To identify Round Stingray (Urobatis halleri), look at these key features.

Physical Characteristics

Body shape

flat

Coloration

Dorsal surface typically light brown, gray, or olive, often with a pattern of darker spots, blotches, or reticulations that help it camouflage with the substrate. Ventral surface is white or cream-colored.

Scale type

none

Mouth position

inferior

Distinctive features

Nearly circular pectoral fin disc, slightly longer than wide., Short, stout tail, approximately 60-75% of disc length., One or more serrated, venomous spines located on the dorsal surface of the tail., Small dorsal fin located just anterior to the caudal spine., Small, rounded caudal fin at the tip of the tail.

Dorsal fin

A single, small, rounded dorsal fin is present just before the caudal spine.

Tail fin

Short, stout, and muscular, bearing one or more venomous spines. Terminates in a small, rounded caudal fin.

Pectoral fin

Forms a nearly circular disc, giving the ray its 'round' appearance.

Distinctive fins

The presence of a venomous caudal spine and a small, distinct caudal fin are key features.

Identification Tips

1. 1

   Disc Shape

   Look for a nearly circular pectoral fin disc, which is a primary distinguishing feature.

2. 2

   Tail

   Observe the short, thick tail with a small dorsal fin just before the venomous spine, and a distinct caudal fin at the tip.

3. 3

   Coloration

   Note the mottled brown or gray coloration with darker spots or blotches, providing camouflage.

4. 4

   Size

   Adults are relatively small, typically less than 30 cm (12 inches) in disc width.

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