Guppies Collections (Poecilia reticulata)

Guppies (Poecilia reticulata), also known as the "millionfish," are among the most popular and colorful freshwater tropical aquarium fish in the world. They are widely loved for their active personalities, vivid color variations, and ease of breeding.

Quick Overview

Lifespan: 2 to 3 years.

Adult Size: 1 to 2 inches (2.5 to 5 cm).

Temperament: Peaceful community fish.

Breeding Type: Livebearers (give birth to free-swimming young).

Water Parameters & Tank Setup

Guppies need a stable environment to thrive. While they are adaptable, keeping their water within these specific limits prevents stress and disease:

Tank Size: Minimum 10 gallons for a small group.

Water Temperature: 72°F to 82°F (22°C to 28°C). An aquarium heater is required.

pH Range: 7.0 to 8.0 (slightly alkaline water helps their colors shine).

Water Hardness: Hard water is best (8–12 dGH) with plenty of calcium and magnesium.

Filtration: Use gentle filters, like sponge filters. Strong currents from large filters can exhaust their delicate fins.

Plants: Use dense or floating live plants to provide hiding spots and reduce light-driven algae.

Diet and Feeding

Guppies are omnivores. To maintain their bright colors and immune systems, provide a varied diet rather than just one food type:

Daily Meals: High-quality tropical flakes, micro pellets, or bug bites.

Weekly Treats: Frozen or live foods like brine shrimp, daphnia, or bloodworms.

Feeding Schedule: Feed them once a day, six days a week. Only give what they can eat in 2 minutes.

Digestion Break: Fast your fish one day per week to let their digestive tracks clear out.

Group Ratios and Tankmates

Guppies are shoaling fish and must live in groups of 3 or more. Because males can aggressively pursue females, you must manage your gender ratios carefully:

All-Male Tank: If you do not want babies, keep only males.

Mixed-Gender Tank: Keep a ratio of 2 to 3 females for every 1 male. This distributes male attention so individual females do not get stressed or injured.

Good Tankmates: Peaceful fish like neon tetras, platies, mollies, and corydoras catfish.

Fish to Avoid: Aggressive fish, large fish (like angelfish) that will eat them, or fin-nippers (like certain barbs).

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