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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 particular 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 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.

Molly Comments (7)


"thiago recommended thissd web to me i thinks its k"

Thiago Silva

"Hi i am glad to get away from football/soccer. i like studying animals for an change."


"I had a pet fish but my sister killed it :("

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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 the species...
Scientific Name:
Comprised of the genus followed by the species...
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
Life Span:
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:Algae
The specific area where the animal lives...
Rivers in the Amazon Rainforest
Average Clutch Size:
The average number of eggs laif 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 the animal...
Large-sized fins and bear live young

Related Animals

Also known as the Millionfish!
Native to the freshwater streams of South America!
Generally found in fast-flowing streams!