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Molly (Poecilia)Molly (Poecilia)Molly (Poecilia)
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Molly Facts

Five groups that classify all living things
A group of animals within the animal kingdom
A group of animals within a pylum
A group of animals within a class
A group of animals within an order
A group of animals within a family
Common Name:
Most widely used name for this species
Scientific Name:
The name of the animal in science
The area where the animal first came from
Central America
What kind of foods the animal eats
Size (L):
How long (L) or tall (H) the animal is
5cm - 10cm (2in - 4in)
Water Type:
Either freshwater, brakish or salt
Optimum pH Level:
The perfect acidity conditions for the animal
7.5 - 8.5
How long the animal lives for
3 - 5 years
Conservation Status:
The likelihood of the animal becoming extinct
The colour of the animal's coat or markings
Brown, Black, Yellow, White, Green, Blue, Red, Orange
Skin Type:
The protective layer of the animal
Favourite Food:
The preferred food of this animal
The specific area where the animal lives
Rivers in the Amazon Rainforest
Average Clutch Size:
The average number of eggs laid at once
Main Prey:
The food that the animal gains energy from
Algae, Insects, Bloodworm
Other animals that hunt and eat the animal
Large Fish, Birds, Reptiles
Distinctive Features:
Characteristics unique to this animal
Large-sized fins and bear live young

Molly Location

Map of Molly Locations
Map of South America


The molly is a small-sized tropical fish that is found naturally in the warm and peaceful rivers of Central America. Today, mollies are extremely popular fish to be kept in the community of an artificial aquarium, all around the world.

Mollies are known for their calm and peaceful nature, which along with their brightly coloured bodies, makes them a particularly popular choice for freshwater tanks of all shapes and sizes. The male mollies are more slender than the female mollies and have a slightly longer tail fin, making the two sexes easy to tell apart.

Mollies live amongst the plants in a group containing numerous molly individuals, known as a school. Although this works well for the mollies in the wild, the fast-paced breeding of these molly groups can quickly become a problem in artificial tanks.

Mollies are omnivorous animals and therefore have a diet that is comprised of both plant and animal matter. Mollies primarily eat small invertebrates including insects and bloodworm, along with algae and food particles in the water.

Due to their small size, mollies have numerous natural predators within their environment, with larger fish being the most common predators of the molly. Aquatic birds and even reptiles are also known to hunt them.

Unlike many other species of tropical fish, female mollies give birth to live young rather than laying eggs which are very likely to be eaten. Mollies can give birth to up to 100 fry at once, only a couple of weeks after fertilisation occurred.

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First Published: 11th January 2010, Last Updated: 8th November 2019

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2. David Burnie, Kingfisher (2011) The Kingfisher Animal Encyclopedia [Accessed at: 01 Jan 2011]
3. Dorling Kindersley (2006) Dorling Kindersley Encyclopedia Of Animals [Accessed at: 11 Jan 2010]
4. Richard Mackay, University of California Press (2009) The Atlas Of Endangered Species [Accessed at: 11 Jan 2010]
5. Tom Jackson, Lorenz Books (2007) The World Encyclopedia Of Animals [Accessed at: 11 Jan 2010]