Freshwater High Grade Black Diamond Polka Dot Stingray

Freshwater High Grade Black Diamond Polka Dot Stingray

The Freshwater High Grade Black Diamond Polka Dot Stingray is one of the most sought-after stingray varieties in the aquarium world. Known for its jet-black body adorned with brilliant, evenly spaced white spots, this stingray is a living work of art. The “high grade” designation refers to its exceptional spot pattern and coloration—traits that are the result of selective breeding over generations. Under proper lighting, the contrast between the deep black base and the vivid polka dots makes this fish an unforgettable centerpiece for any large freshwater aquarium.

This striking stingray originates from the Potamotrygon leopoldi species, which is native to the Xingu River in Brazil, a fast-flowing tributary of the Amazon Basin. In the wild, these rays glide over sandy riverbeds, using their electroreceptive abilities to locate crustaceans, small fish, and other prey. In captivity, they retain these fascinating natural behaviors, adding movement and personality to the aquarium.

Due to their adult size and specialized needs, Black Diamond Polka Dot Stingrays are best suited for advanced aquarists. Adults can grow up to 20–24 inches in disc diameter, requiring an aquarium of at least 300 gallons for juveniles and 500+ gallons for fully grown specimens. A fine sand substrate is essential to prevent irritation to the ray’s underside, and decorations should be smooth to avoid injuries. Open swimming space is key, as stingrays are active bottom dwellers.

Water quality is critical to their health. These rays thrive in temperatures of 26–29°C (79–84°F) with soft to moderately hard water. Because they are sensitive to nitrates, strong filtration and regular water changes are a must. Maintaining pristine water will help them stay healthy and display their best coloration.

Feeding is both simple and rewarding. Black Diamond Polka Dot Stingrays enjoy a diet rich in protein, including shrimp, earthworms, bloodworms, and small pieces of fish. Over time, many will learn to accept frozen foods, making daily care more manageable.

They are generally peaceful and can be kept with other large, calm fish species. However, small fish may be mistaken for food, and aggressive tankmates that nip at their disc should be avoided. With the right setup and attentive care, these rays can live for over a decade, offering years of beauty and fascination.

Learn more about Potamotrygon leopoldi and other freshwater stingrays from trusted sources like the Smithsonian’s National Zoo

 Frequently Asked Questions (FAQs)

1. How large do Black Diamond Polka Dot Stingrays grow?
Adults can reach a disc width of 20–24 inches.

2. Are they aggressive toward other fish?
No, they are peaceful with suitable large tankmates.

3. What do they eat in captivity?
They eat shrimp, worms, fish, and other protein-rich foods.

4. Do they require special substrate?
Yes, fine sand is recommended to protect their undersides.

5. Are they beginner-friendly?
No, they are best for experienced aquarists due to size and care requirements.