Bat Ray - Myliobatis californica - California Bat Ray

California Bat Rays are often encountered while diving in the kelp forests around Catalina Island. The triangular shaped pectoral fins of the bat ray are often called the wings and compared to those of a bat, hence the common name. These rays swim gracefully by flapping their bat-like pectoral fins bird style. The fins are also used to hunt food. The rays flap their pectoral fins in the sand to expose buried prey and then use their lobe-like snout to dig prey from their sandy bottom habitats.

Maximum Size: The Bat Ray can grow up to 28 inches. Maximum disc width 1.8m. at birth 20-31cm.

General Size: The Bat Ray usually come in 6 to 12 inches.

Minimum Tank Size: The Bat Ray prefers a tank of at least 300 gallons with plenty of places to hide & swim.

Tank Conditions: The Bat Ray should ideally be kept in temperatures between 72 and 78 degrees Fahrenheit. A pH value of 8.1 or 8.4, and a specific gravity of 1.020 to 1.025 should be maintained. When kept with invertebrates, the specific gravity range should be 1.020 to 1.025, for the invertebrate species. In a fish only aquarium, the specific gravity should fall between 1.020 and 1.023.

Habitat: The Bat Ray lives in sandy and muddy bottoms in relatively shallow waters of beaches as well as in bays, channels, and inlets. Endemic to the eastern Pacific from Yaquina Bay in northern Oregon to the Gulf of California. Common along the Californian coastline and around the Channel Islands. Maintains a small home range

Behavior: Solitary or schooling. Large schools made up of thousands of bat rays have been seen around the Channel Islands. Bat Ray schools in Baja may contain Spotted Eagle Rays where as northern populations may school with Smoothhound Sharks. Individuals are sometimes found resting on the sand in excavated depressions.

Reproduction: Ovoviviparous.

Diet and Feeding: The Bat Ray is a carnivore and likes to eat variety of chopped crustaceans, fish pieces, shrimp, shellfish, squid. Feeding may be difficult in the beginning. The best way to begin feeding is by offering small pieces of cleaned squid or freshwater ghost shrimp.

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