About the Round Stingray

The Round Stingray (Urobatis halleri) is a small, hardy marine ray native to the eastern Pacific Ocean, from northern California to Panama, including the Gulf of California. It is one of the most common stingrays found along the Pacific coast and is highly regarded in the marine aquarium hobby for its manageable size, attractive pattern, and adaptability. Its nearly circular disc gives it its common name.

Appearance

The Round Stingray has a nearly circular disc that is typically olive-brown to gray in color, often covered with small, dark spots or reticulations. The pattern can vary significantly between individuals. The ventral side is white. They have a relatively short tail with a venomous spine. Adults typically reach a disc width of 10-12 inches, making them one of the smaller marine ray species suitable for home aquariums.

Size & Growth

Round Stingrays reach a maximum disc width of about 12 inches. They are relatively slow-growing and can live 10-15 years in captivity with proper care.

Tank Requirements

A minimum tank size of 120 gallons is recommended for a single adult Round Stingray, with larger tanks for multiple rays. The tank should have a deep sand bed (at least 2-3 inches) of fine, soft sand to allow burying. Live rock should be arranged securely to create caves without sharp edges. Excellent filtration and protein skimming are essential. Water parameters: temperature 68-78°F, salinity 1.020-1.025, pH 8.1-8.4. They are more tolerant of cooler temperatures than many marine rays.

Diet

Round Stingrays are carnivores and need a meaty diet: live or frozen shrimp, squid, clams, mussels, small fish, and high-quality marine sinking pellets or frozen preparations. Feed 2-3 times a week. Variety is important for health.

Compatibility

Round Stingrays are generally peaceful but will eat small fish and invertebrates. Suitable tank mates include larger, peaceful fish such as tangs, angelfish, triggerfish (with caution), and large wrasses. Avoid aggressive fish and fin-nippers. They can be kept singly or in groups in large tanks.

📞 Call 520-809-7055 for current availability and pricing – these hardy rays are excellent for marine enthusiasts.