Fancy Guppy

Species NamePoecilia reticulata
Common NameFancy Guppy, Rainbowfish
Care LevelEasy
Lifespan2-3 years
Adult Size1.2-2.4 inches
Minimum Tank Size5 gallons
Temperature74°F – 82°F (23°C – 28°C)
Water ConditionspH 6.8-7.8, Soft to Medium-hard

About the Fancy Guppy – Species Summary

The Fancy Guppy, or Poecilia reticulata, is an enduring favorite among aquarists, both novice and experienced alike. Their vibrant colors, ease of care, and lively demeanor have earned them the moniker “Rainbowfish. Originating from South America, these small, vivacious fish are a staple in many community tanks across the globe.

Fancy Guppy Lifespan

Fancy Guppies typically enjoy a lifespan of 2-3 years in captivity. With optimal care, some can live even longer. It’s crucial to provide them with a balanced diet, proper water conditions, and regular health check-ups to ensure they live out their full lifespan.


The Fancy Guppy is renowned for its brilliant hues and stunning tail designs. Males are generally smaller than females but compensate with more vibrant colorations and intricate tail patterns. They can come in a variety of colors, from blues and reds to yellows and greens. Their caudal fins, or tails, can be shaped in a myriad of styles including fan, flag, spade, and lyretail.

Average Size

Adult Fancy Guppies will typically grow to an average size of 1.2 to 2.4 inches, with males being on the smaller side compared to females.

Fancy Guppy Care

Tank Size

A minimum tank size of 5 gallons is recommended for Fancy Guppies. While they are small in stature, they are active swimmers and will appreciate some space to roam.

How To Set Up Their Tank

Guppies thrive in well-planted tanks. Incorporate live plants such as Java Moss or Anubias, which provide hiding spots and also help in maintaining water quality. A soft, fine substrate is suitable, and you can also add some floating plants to offer shelter. Ensure the tank has a gentle filter to prevent strong currents which can stress these delicate swimmers.

Lighting Requirements

Fancy Guppies don’t have specific lighting requirements. A standard aquarium light that supports plant growth will suffice.


The ideal pH range for Fancy Guppies is between 6.8 and 7.8.


Maintain a water temperature between 74°F and 82°F to keep your Fancy Guppies comfortable.

Water Parameters

Soft to medium-hard water is best for these fish. Regular water changes and monitoring of ammonia, nitrites, and nitrates will keep your guppies in peak health.

Disease Potential

Fancy Guppies are susceptible to several diseases, with the most common being fin rot, ich, and flukes. Quarantining new fish, maintaining water quality, and a balanced diet can significantly reduce the risk of diseases.

Food & Diet

Being omnivores, Fancy Guppies have a varied diet. They’ll enjoy high-quality flake food, live foods like brine shrimp and daphnia, and even vegetable matter like lettuce and peas. Feeding them a balanced diet ensures vibrant colors and good health.

Behavior and Temperament

Fancy Guppies are peaceful and social fish, making them perfect for community tanks. They are active swimmers, especially during feeding time, and their colorful display is a joy to watch.

Tank Mates

Due to their peaceful nature, Fancy Guppies can coexist with a range of tank mates. Tetras, mollies, platies, and non-aggressive bottom dwellers like Corydoras are ideal companions. It’s crucial to avoid keeping them with fin-nippers or much larger aggressive fish.


Breeding Fancy Guppies is a rewarding experience. They are livebearers, meaning the females give birth to free-swimming fry. A single female can produce anywhere from 20 to 50 fry. It’s essential to provide a separate breeding tank or a breeding box to protect the fry, as adult guppies can sometimes eat them.

Fancy Guppy FAQs (Frequently Asked Questions)