Description
Species Overview
The Purple Moscow Guppy (Poecilia reticulata) is a selectively bred fancy guppy strain belonging to the Moscow group of guppies, which are recognized for extensive coloration that develops across the body and fins rather than being concentrated primarily in the tail. Purple Moscow Guppies are selected for the rich purple-toned appearance associated with this particular Moscow variety, with individual coloration naturally varying with age, sex, genetics, lighting, and condition.
Males typically develop the strongest overall coloration and more elaborate finnage, while females grow larger, develop fuller bodies, and generally display more restrained coloration. Like other domestic guppies, Purple Moscow Guppies are active, social livebearers that spend much of the day swimming, displaying, and foraging through the upper and middle portions of the aquarium.
Our Purple Moscow Guppies are Tank Bred and available as males, females, or pairs. Their extensive coloration, active behavior, manageable adult size, and established Moscow-type appearance make them particularly appealing for planted display aquariums as well as aquarists interested in maintaining and selectively breeding fancy guppy strains.
What We Love About This Fish
Classic Moscow-Type Appearance: Purple Moscow Guppies belong to the distinctive Moscow group of fancy guppies, known for extensive coloration across the body and fins.
Exceptional Male Display: Mature males develop the strongest coloration and elaborate finnage, creating a striking display as they move through the aquarium.
Active and Highly Visible: Purple Moscow Guppies spend much of the day swimming, foraging, and interacting throughout the upper and middle water column.
Tank-Bred Fancy Guppy: Our Purple Moscow Guppies are Tank Bred and available as males, females, or pairs for display aquariums and selective breeding projects.
Quick Care Guide
Scientific Name: Poecilia reticulata
Common Name: Purple Moscow Guppy
Source: Tank Bred
Average Purchase Size: Approximately 1–1.5 inches; size varies by age and sex
Adult Size: Males typically reach approximately 1.5–2 inches, while females commonly reach approximately 2–2.5 inches
Care Level: Easy. Purple Moscow Guppies are adaptable, but consistent water quality and adequate mineral content remain important for long-term health.
Temperament: Peaceful. Purple Moscow Guppies are appropriate for planted and community aquariums with non-aggressive species that thrive under similar water conditions.
Diet: Omnivore. Offer a varied diet built around quality prepared foods and supplemented with appropriately sized live, frozen, and plant-based foods.
Social Behavior: Social and active. Purple Moscow Guppies interact frequently with other guppies but do not form the tightly coordinated schools characteristic of many tetras and rasboras. Males regularly display and court females.
Activity Level: Active
Aquarium Level: Upper to middle water column
Minimum Aquarium Size: 10 gallons; larger aquariums provide greater water stability and more swimming space, particularly for groups and breeding populations.
Lifespan: Approximately 2–3 years, although genetics, temperature, nutrition, reproductive demands, and overall husbandry influence individual lifespan.
Aquatic Arts Tip
Purple Moscow Guppies are adaptable, but adaptable does not mean indifferent to water quality. Stable, mineral-rich water and consistent aquarium maintenance are more important than repeatedly adjusting the aquarium to chase an exact pH or hardness number.
Water Parameters
Temperature: 72–82°F (22–28°C)
pH: 7.0–8.2
GH: 8–18 dGH
KH: 4–12 dKH
Ammonia: 0 ppm
Nitrite: 0 ppm
Nitrate: Ideally maintained below 20 ppm through appropriate stocking, feeding, filtration, and regular water changes
Aquarium Requirements
Minimum Aquarium Size: 10 gallons. Larger aquariums provide greater water stability and are strongly recommended for larger groups, community setups, or aquariums where fry will be allowed to grow.
Filtration: Use reliable biological and mechanical filtration sized appropriately for the aquarium. Sponge filters are particularly useful in breeding setups because they provide biological filtration without creating dangerous intake suction for newborn fry.
Water Flow: Low to moderate. Purple Moscow Guppies are active swimmers but do not require strong current, and excessive flow can become unnecessarily demanding for fancy guppies with developed finnage.
Oxygenation: Maintain good gas exchange through appropriate filtration, surface movement, or supplemental aeration when necessary.
Aquarium Maturity: A fully cycled aquarium is required. Purple Moscow Guppies should never be used to cycle a new aquarium.
Plants: Highly recommended. Live plants provide cover, grazing surfaces, visual barriers, and refuge for fry while contributing to a more biologically active aquarium.
Lighting: Low to moderate lighting is suitable for the fish themselves. Choose lighting intensity primarily around the requirements of the live plants being maintained.
Aquatic Arts Tip
Stability matters more than chasing a perfect number. Purple Moscow Guppies thrive in moderately hard, mineral-rich water, but repeatedly adjusting pH or hardness can create more stress than maintaining stable conditions within an appropriate range. Test your source water, understand what comes from your tap, and build your husbandry around consistency.
