About the Cortez Ray

The Cortez Ray (Urobatis maculatus) is a small, hardy marine stingray native to the Gulf of California (Sea of Cortez) and the Pacific coast of Baja California. It is highly regarded in the marine aquarium hobby for its manageable size, beautiful spotted pattern, and adaptability. Unlike some more delicate rays, the Cortez Ray is known for its hardiness, making it a great choice for experienced aquarists looking to add a stingray to a marine system.

Appearance

The Cortez Ray has a rounded disc that is typically olive to brown in color, covered with numerous small, dark spots and sometimes lighter 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 8-10 inches, making them one of the smaller marine ray species.

Size & Growth

Cortez Rays reach a maximum disc width of about 10 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 Cortez Ray, 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 72-78°F, salinity 1.020-1.025, pH 8.1-8.4. They are more tolerant of variations than some marine rays but still require good water quality.

Diet

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

Compatibility

Cortez Rays 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.