Motoro - 6"

Species Profile

• Scientific Name: Potamotrygon motoro
• Common Name: Motoro Stingray, Ocellate River Stingray
• Adult Size: Typically 18–24 inches (45–60 cm) in disc diameter; can reach up to 36 inches (90 cm)
• Life Expectancy: 10–20 years in captivity with proper care
• Habitat: Freshwater rivers and streams of South America, primarily in the Amazon and Orinoco River basins; prefers sandy or muddy substrates with slow to moderate water flow

Tank Requirements

• Minimum Tank Size: 180 gallons (681 liters) for juveniles; 300+ gallons (1135+ liters) for adults
• Ideal Temperature: 75–82°F (24–28°C)
• pH Range: 6.5–7.5
• Water Hardness: Soft to moderately hard (2–12 dGH)
• Temperament: Generally peaceful but can be territorial with other bottom dwellers; should not be housed with small fish that can be mistaken for food

Diet & Nutrition

• Omnivorous: Yes
• Diet: Carnivorous tendencies; feeds on worms, small fish, crustaceans, and high-protein prepared foods like sinking pellets, shrimp, or earthworms

Appearance

• Coloration: Light brown to tan body with distinct orange, yellow, or white “eye spots” (ocelli) ringed in black across the dorsal surface
• Shape: Classic disc-shaped body with a whip-like tail, which often contains a venomous spine (used defensively)

Distinctive Features

• Prominent ocelli (eye-like spots) on the dorsal side used for camouflage and predator deterrence
• Smooth, flattened body adapted for life on the riverbed
• Venomous barb located on the tail, capable of delivering a painful sting—should be handled with extreme caution