Japan Blue Red Tail Guppy – Poecilia reticulata

Product Description

The Japan Blue Red Tail Guppy (Poecilia reticulata) is a colorful selectively bred Fancy Guppy known for its brilliant metallic blue body coloration and contrasting orange-to-red tail.

Males typically display the strongest metallic blue coloration together with a colorful flowing caudal fin, while females are generally larger and more subdued in body coloration.

This strain is an excellent choice for planted aquariums and peaceful freshwater community tanks, offering strong color and constant activity without requiring advanced care.

Scientific Name: Poecilia reticulata
Common Name: Japan Blue Red Tail Guppy
Family: Poeciliidae
Origin: Captive-Bred / Domestic Strain
Adult Size: Approximately 1.5–2.5 in depending on sex
Temperament: Peaceful
Care Level: Easy
Swimming Level: Mid to Upper Level
Breeding Type: Livebearer

Aquarium Recommendation

Japan Blue Red Tail Guppies are active community fish and do best in a mature, well-filtered freshwater aquarium with open swimming space and planted or sheltered areas.

Live plants are beneficial and can provide additional cover, especially if males and females are kept together and fry are produced.

Stable water conditions are more important than trying to maintain extremely precise parameters.

Water Parameters

Temperature: 72–82°F / 22–28°C
pH: Approximately 7.0–8.0
Hardness: Moderate to Hard
Flow: Low to Moderate
Filtration: Moderate

Regular partial water changes and stable water quality are recommended.

Feeding

Japan Blue Red Tail Guppies are omnivorous and readily accept a varied diet including:

• High-quality flakes
• Micro pellets
• Brine shrimp
• Daphnia
• Frozen foods
• Small live foods
• Spirulina-based foods

Feed small portions once or twice daily and avoid excessive feeding.

Tank Mates

Best kept with peaceful freshwater community fish of similar size.

Suitable tank mates may include:

• Small peaceful tetras

• Rasboras

• Corydoras

• Small peaceful plecos

• Other non-aggressive livebearers

Avoid aggressive species and known fin-nippers, particularly because males may develop large flowing tails.

Breeding

Japan Blue Red Tail Guppies are livebearers and may reproduce readily when mature males and females are kept together.

Females give birth to free-swimming fry rather than laying eggs. Dense plants and other cover can increase fry survival.

Individual Appearance

Japan Blue Red Tail Guppies may naturally vary in:

• Metallic blue body coverage
• Tail coloration
• Orange-to-red intensity
• Tail size and shape
• Body markings
• Fin appearance
• Sex
• Exact size

Please Note: Photos and videos show actual RJ AQUA fish/specimens from this stock. Individual coloration, tail pattern, fin shape, body appearance, sex, and exact size may vary naturally between fish.