Description
Motoro Stingray (Potamotrygon motoro)
📌 Basic Info
Scientific Name: Potamotrygon motoro
Common Names: Motoro Stingray, Ocellate Stingray, Spotted River Ray
Family: Potamotrygonidae
Order: Myliobatiformes
Origin: South America — Amazon, Orinoco & Paraná River Basins
Size: 40 – 60 cm disc diameter (adult)
Lifespan: 10 – 20 years
Tank Zone: Bottom-dweller
🌊 Water Parameters
Temperature: 25 – 28°C
pH: 6.5 – 7.5
Hardness: Soft to moderate
🐟 Characteristics
Body Shape: Round, smooth disc with a long tail
Coloration: Brown to dark olive base with bright orange, gold, or yellow circular “motoro” spots
Pattern: Distinct ocellated rings, unique to each individual
Behavior: Calm, intelligent, interactive, and responsive
Special Feature: Highly recognizable golden spot pattern — a premium showpiece in freshwater aquariums
🍽️ Diet
Type: Carnivorous
Diet Includes: Earthworms, shrimp, bloodworms, small fish pieces, sinking carnivore pellets
Feeding Frequency: 1–2 times daily for juveniles, once daily for adults
🛠️ Tank Maintenance
Tank Size: Minimum 6 ft tank for juveniles; 7–8 ft or bigger for adults
Substrate: Soft fine sand to protect the ray’s underside
Filtration: Very strong filtration; pristine, stable water conditions required
Decor: Smooth driftwood and open space; avoid sharp objects
Lighting: Moderate
Water Change: 30–40% weekly
👥 Social Behavior
Nature: Peaceful but needs large space
Tank Mates: Arowana, Datnoids, Silver Dollars, Large Catfish
Avoid: Small fish (will be eaten), aggressive predators, fin-nippers
Breeding: Advanced level; difficult in home aquariums
✅ Do’s
• Provide large footprint tanks
• Use soft sand substrate
• Maintain excellent water quality
• Offer fresh protein-rich foods
❌ Don’ts
• Don’t use gravel
• Don’t add sharp decorations
• Don’t keep with small fish
• Avoid unstable water parameters
⭐ Quick Tip
The Motoro Stingray is a stunning, intelligent freshwater ray known for its golden ringed spots and graceful movement. A true centerpiece for advanced aquarists with large aquariums.
