Purple Moscow Guppies showcase a deep and rich purple coloration, often combined with metallic or iridescent hues. Their colors are captivating and visually appealing.
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Purple Moscow Guppies showcase a deep and rich purple coloration, often combined with metallic or iridescent hues. Their colors are captivating and visually appealing.
The Purple Moscow Guppy is instantly recognizable for its rich, velvety purple coloration that often covers the entire body, including the head, tail, and dorsal fin. Under certain lighting, the purple can take on a metallic sheen or shift slightly toward blue-violet hues. Males are smaller and more vibrantly colored than females, with larger, more flowing tails. Females typically have a lighter body tone but still retain a purple tint, making them attractive in their own right.
1-3 years
Omnivorous
Purple Moscow Guppies are a stunning centerpiece fish for planted community tanks, combining beauty, hardiness, and prolific breeding. Their solid, uniform coloration offers a more refined aesthetic compared to patterned guppies, making them highly sought after by collectors and breeders.
Beginner to Intermediate
10 gallons
6.8 – 7.8
Moderately hard to hard
22°C – 28°C (72°F – 82°F)
2.5 inches
Small peaceful fish such as tetras, rasboras, mollies, platys, Corydoras, Otocinclus, and freshwater shrimp
Angelfish, Betta (male), Tiger Barbs, Oscars, Jack Dempsey, Cichlids, Gouramis, Mollies, Platies, Swordtails, Shrimp, Snails
Poecilia reticulata
Poeciliidae
Wild form native to South America; Moscow strain selectively bred in Russia
Peaceful, active, thrives in social groups
To maintain the deep purple sheen that makes this strain famous, a high-protein diet with color-enhancing ingredients is essential. Feed them a staple of high-quality guppy pellets or flakes, supplemented with live or frozen foods like brine shrimp, daphnia, and bloodworms at least 3–4 times a week. Occasional blanched spinach, zucchini, or spirulina-based food supports digestion and boosts immune health. Feeding small portions twice daily is ideal to prevent overfeeding and maintain water quality.
Livebearer – females give birth to fully developed, free-swimming fry every 4–6 weeks
Like all guppies, Purple Moscows are prolific breeders. They are livebearers, meaning females give birth to fully formed fry instead of laying eggs. Gestation lasts 21–30 days depending on temperature, and a healthy female can produce 20–60 fry per batch. What makes them particularly popular among breeders is that the Moscow strain breeds true — most offspring will inherit the rich purple coloration if both parents are Moscow types. Providing dense plant cover such as Java moss or floating plants increases fry survival, as adults may eat them if given the chance.
They thrive in clean, stable water with a slightly alkaline pH between 6.8 and 7.8 and moderate to high hardness (GH 8–12). Temperatures between 24°C and 26°C (75°F–79°F) are optimal for coloration and breeding activity. A gentle filter with adequate biological media is recommended, as they dislike strong currents. Perform weekly 25–30% water changes to keep nitrate levels low and water parameters consistent. Adding live plants helps oxygenate the water and replicate their natural environment.
Common health issues include fin rot, ich, and columnaris if water quality is neglected. Overfeeding or a poor diet can lead to bloating and swim bladder problems. Avoid housing them with aggressive fin-nipping species like tiger barbs. Long-finned varieties can also suffer torn fins in tanks with sharp decor.
Peaceful and friendly
Purple Moscow Guppies are calm, graceful swimmers that stand out for their solid, uniform purple body coloration. They tend to occupy all areas of the aquarium but are most often seen cruising through mid-water, occasionally darting to the surface for food. Males may engage in gentle chasing during courtship but are far less aggressive than Betta splendens or other fin-nippers. They are best kept in groups of at least six, with more females than males to reduce stress from persistent courtship.
The Purple Moscow Guppy (Poecilia reticulata) is a selectively bred strain developed in Russia to achieve its distinctive deep purple body color. Unlike patterned guppies, this variety features a uniform color coverage that extends from nose to tail, with a metallic iridescence that becomes more intense under strong aquarium lighting. They are peaceful, adaptable, and suitable for both beginner and experienced aquarists. Purple Moscows breed readily, often producing offspring that closely match their parents in color and form. They do best in planted aquariums with stable water parameters, moderate hardness, and a varied, protein-rich diet. While hardy, they are most vibrant when kept in well-maintained tanks with plenty of swimming space and hiding spots. Whether for display or breeding, the Purple Moscow Guppy is a jewel in the freshwater aquarium world.