Guppy
Poecilia reticulata
🌍 Overview
The guppy is a small, prolific livebearing fish native to the streams and rivers of northeastern South America and the Caribbean. Named after naturalist Robert John Lechmere Guppy, who submitted specimens to the British Museum in the 1860s, guppies have since become one of the most widely kept and selectively bred aquarium fish in the world, with countless color and finnage varieties developed by hobbyists. They have also been introduced globally as a natural mosquito-control agent, since they readily eat mosquito larvae.
📋 Quick Facts
Native Range
Northeastern South America and the Caribbean (Venezuela, Trinidad, Guyana, Brazil)
Natural Habitat
Freshwater streams, ditches, and slow-moving rivers
Adult Size
1-2.4 inches (2.5-6 cm); males smaller than females
Wild Diet
Mosquito larvae, algae, small invertebrates, and detritus
Wild Lifespan
2-3 years
Conservation Status
Least Concern (IUCN)
⚖️ Compare
Guppy
Human
Adult Size
1-2.4 inches (2.5-6 cm); males smaller than females
5-6 feet (150-185 cm); ~135-200 lbs
Wild Lifespan
2-3 years
~73 years (global average)
Wild Diet
Mosquito larvae, algae, small invertebrates, and detritus
Omnivorous - eats just about anything
Native Range
Northeastern South America and the Caribbean (Venezuela, Trinidad, Guyana, Brazil)
Global - originated in Africa roughly 300,000 years ago
Natural Habitat
Freshwater streams, ditches, and slow-moving rivers
Everywhere from arctic tundra to tropical megacities
Conservation Status
Least Concern (IUCN)
Least Concern (8+ billion and counting)
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🤓 Did You Know?
Guppies are livebearers, meaning females give birth to free-swimming fry rather than laying eggs, and a single female can store sperm from one mating to produce several broods of 20 to 50+ fry over the following months. The species is named after Robert John Lechmere Guppy, who submitted specimens from Trinidad to the British Museum in the 1860s.
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