Calico Molly Care Guide

Poecilia sphenops

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Bioload Score

3600

PeacefulEasy
Max Size
12 cm / 4.7"
Temperature
22–28°C (72–82°F)
pH Range
7 – 8.5
Min Tank Size
75L (20 gal)
Min Group Size
3 fish
Tank Level
Mid-Top
Origin
North America
Temperament
Peaceful
Difficulty
Easy
Breeding Difficulty
Easy

Diet

Omnivorous, with a strong preference for algae and other plant matter supplemented by small invertebrates.

Community Compatibility

Suitable tankmates include platies, guppies, swordtails, peaceful tetras, Corydoras and other calm livebearers with similar water preferences.

Good to Know

The Calico Molly is a selectively bred color form of Poecilia sphenops, named for its mottled pattern of black, orange, white and gray.

Gender Differences

Males are usually smaller and have a pointed gonopodium, while females are larger-bodied with a rounded anal fin and fuller abdomen.

About the Calico Molly

The Calico Molly is a colorful domestic variety of Poecilia sphenops, recognized by its irregular mosaic of black, orange, cream, gray and sometimes reddish patches. Each fish has a unique pattern, ranging from lightly speckled individuals to boldly contrasting forms, and the short, rounded body is typical of the shortfin molly group.These mollies are active, alert livebearers that spend much of their time exploring all levels of the water. They are generally peaceful, although males can court females persistently and may display competitive behavior toward one another, particularly in crowded groups.Wild Poecilia sphenops originates from warm regions of Mexico and Central America, where populations occur in slow-moving streams, ponds, marshes and coastal waters. The species is notably adaptable and can tolerate a range of conditions, including mildly brackish environments, although the Calico Molly is most commonly kept as a freshwater aquarium fish.Like other livebearers, the Calico Molly gives birth to free-swimming young rather than laying eggs. Females can retain sperm and produce multiple broods after a single mating, making the species a prolific presence in both home aquariums and commercial fishkeeping.The Calico Molly is a selectively developed aquarium strain rather than a naturally occurring color pattern. Its popularity comes from the combination of hardy character, lively behavior and the unpredictable patchwork appearance produced in each generation.

Stock Calico Molly in Your Tank

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