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Moscow Blue Guppy
Poecilia reticulata
Animalia›Chordata›Actinopterygii
Variety of Guppy · moscow blue
📍 South America
The Moscow Blue Guppy is a strain developed in Moscow, featuring a deep blue metallic body with a matching blue tail. Like all guppies, it is a hardy livebearer that thrives in most freshwater community tanks and is easy to breed.
Care Guide
Diet
Moscow Blue Guppies are omnivorous and thrive on high-quality flake foods supplemented with small frozen foods like brine shrimp, daphnia, and bloodworms 2-3 times weekly. Feed small amounts once daily, only what they can consume in 2-3 minutes, as overfeeding degrades water quality. Occasional vegetable matter like blanched spinach supports digestive health.
Behavior
These guppies are peaceful, active swimmers that spend most of their time in the mid-water column, displaying their striking blue coloration through constant movement. Males are more colorful but less aggressive than many fish, though they may chase females during breeding season. They are social and do best in groups of at least 3-4 individuals.
Breeding
Moscow Blue Guppies breed readily in captivity and are prolific livebearers requiring no special conditions—they will spawn in community tanks with adequate plants for fry shelter. Females produce 20-50 fry every 4-6 weeks; separate pregnant females into a breeding box or heavily planted tank to protect fry from predation. Fry are easy to raise on crushed flakes and infusoria.
Tank Mates
Peaceful algae eaters that occupy different water zones and have no interaction with guppies
Similar size, peaceful temperament, and compatible water parameters; schooling behavior complements guppy activity
Peaceful and similar size; monitor for territorial behavior during breeding season
Peaceful invertebrates that occupy different ecological niches; adult shrimp are generally safe but fry may be predated upon
Hardy plant that provides shelter for fry and doesn't require special care; guppies won't uproot it
Common Diseases
Fin Rot
Frayed, disintegrating fins; white or black edges on fins; lethargy
Perform 25% water changes every 2-3 days, improve water quality, and treat with aquarium salt (1 teaspoon per 5 gallons) or antibacterial medication if severe
Ich (Ichthyophthirius multifiliis)
White spots on body and fins resembling salt grains; scratching against objects; rapid breathing
Raise temperature to 28-30°C, perform daily water changes, and treat with ich medication or salt; maintain elevated temperature for 10-14 days
Velvet Disease
Fine golden or rust-colored dust on body; clamped fins; loss of appetite; rapid gill movement
Increase aeration, dim lights, raise temperature to 28°C, and treat with copper-based medication or salt; quarantine affected fish if possible
Popeye (Exophthalmia)
One or both eyes bulging outward; cloudiness around eye; lethargy
Perform large water changes to improve water quality, check for ammonia/nitrite spikes, and treat with antibacterial medication if caused by infection
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