Guppy
Poecilia reticulata · Fish. Vertebrate. Cold-blooded. Domestic/Wild.
Animal Family
Poeciliidae family, Cyprinodontiformes order, Actinopterygii class
Animal Category
Domestic Pet / Freshwater Animal
Breed / Variety
Domestic Guppy fry (juvenile)
Conservation Status
IUCN Status: Not Evaluated. Generally stable and widespread; however, can be invasive when introduced to non-native ecosystems.
About This Creature
Small, elongated fish with a tapered body. Juveniles (fry) are typically pale or translucent with large eyes relative to their head. Adults exhibit high sexual dimorphism; males are smaller with vibrant colors and flowing fins, while females are larger and more subdued in color.
Physical Characteristics
Torpediform body, superior mouth for surface feeding, large lateral eyes. Juveniles appear translucent silver/grey. Possesses a gonopodium in mature males for internal fertilization. Adaptive fin shapes including dorsal and caudal fins.
Behavior & Temperament
highly social, schooling fish. Non-aggressive and active. Diurnal activity patterns. No parental care; parents may exhibit cannibalistic behavior toward fry. Highly prolific breeders.
Habitat & Diet
Origin Region
Native to Northeast South America (Venezuela, Guyana, Trinidad and Tobago); introduced globally.
Habitat
Freshwater/Brackish streams and ponds. Aquatic locomotion.
Diet & Nutrition
Omnivore. Primary food sources include algae, plant matter, small insects, and zooplankton. In captivity, consumes flake food and micro-pellets. Adapted for surface skimming.
Lifespan & Health
1 to 3 years typically. Susceptible to ich, velvet disease, and fungal infections. High reproductive rate with gestation of 21–30 days, producing 20–60 live fry per brood.
Special Characteristics
Known as the 'Missionary Fish' for its use in mosquito control (larvivorous). Significant in the aquarium trade and genetics research due to rapid generation time.
Ecological Information
Secondary consumer in the food web. Serves as prey for larger fish and birds. Controls insect populations by consuming larvae. Occupies various freshwater niches due to high salt and temperature tolerance.