🧬 Origins and Classification
Scientific Name: Poecilia reticulata (Blue strain)
Family: Poeciliidae
Blue Guppy Fish are a selectively bred variant of guppies known for their beautiful blue shades and shimmering scales. They originate from wild guppies found in South America but have been genetically refined to achieve their vibrant blue tones. This variety is popular among aquarists because of its color, peaceful nature, and easy care.
🎨 Appearance
Color:
- Shades range from light sky blue to deep royal blue
- Some strains show metallic or iridescent shine
- Males are more colorful and flashy, while females appear softer and lighter in tone
Structure:
- Males have slim, streamlined bodies with large, decorative fins
- Females are bigger with rounder bellies and shorter tails
- Tail shapes can vary: delta tail, fan tail, round tail, or lyretail
Size:
- Males: 1.2–1.5 inches
- Females: 2–2.5 inches
Lifespan:
Typically 2–3 years with good care.
🏡 Tank Requirements
Tank Size:
Minimum 10 gallons; blue guppies look especially stunning in planted aquariums.
Water Parameters:
- Temperature: 72–82°F
- pH: 6.8–7.8
- Hardness: Moderate hardness preferred
Lighting:
Medium to bright lighting highlights their blue colors beautifully.
Habitat Setup:
- Live plants such as Java Moss, Anubias, and Water Sprite
- Open swimming space
- Gentle filtration; avoid strong current
🍽️ Diet
Type: Omnivorous
Foods:
- High-quality guppy flakes or micro pellets
- Frozen or live foods like brine shrimp, daphnia, and bloodworms
- Spirulina and color-enhancing foods help maintain bright blue tones
Feeding Tips:
Feed 2–3 small meals per day.
🤝 Behavior and Compatibility
Temperament:
Peaceful, active, and suitable for most community tanks.
Tank Mates:
- Great with tetras, rasboras, mollies, platies, corydoras, and shrimp
- Avoid aggressive fish and fin-nippers
Grouping:
Best kept with 1 male to 2–3 females, or as a mixed group.
💡 Care Notes
Blue guppies stay healthiest in clean water with regular weekly water changes of 20–30%.
A varied diet helps intensify their coloring.
Planted tanks improve comfort and allow their blue tones to stand out more vibrantly.
These guppies add a calm, cool blue beauty to any aquarium and are perfect for both beginners and experienced fish keepers.
