Longfin Zebra Danio - Danio rerio
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The Longfin Zebra Danio is a lively, fast-swimming freshwater fish with striking horizontal stripes and elongated fins that add elegance to its energetic movements. Ideal for community tanks, it thrives in well-oxygenated water and brings constant activity to the aquarium.
Common Names: Zebra Danio, Zebrafish
Scientific Name: Danio rerio
Family: Cyprinidae
Size: 2–2.5 inches
Temperament: Peaceful
Difficulty: Easy
Native Region: Streams and rivers of India, Nepal, and Bangladesh
Tank Size: Minimum 10 gallons (larger recommended for groups)
Temperature: 64–75°F
pH: 6.5–7.5
Hardness: Soft to moderately hard
Decor: Open swimming space with plants along the sides and back; moderate flow preferred
• Schooling Fish: Keep in groups of 6 or more for best behavior and color
• Tankmates: Ideal with other active, peaceful community fish
• Diet: Omnivorous – readily accepts flakes, micro pellets, and small frozen foods
• Behavior: Very active surface and mid-level swimmer; cooler temperatures help reduce fin-nipping tendencies