Guppy

The Guppy fish, with their colorful designs and feathery tailfins, are favorites with people who keep freshwater aquariums.

Guppies are tiny tropical fish that live throughout the world. They are sometimes called rainbow fish or millionfish. There are 276 species of guppy that belong to the Poeciliidae family.

3 Incredible Guppy Facts!

• The millionfish: Guppies go by alternate names including rainbow fish and millionfish. They are called rainbow fish because of their colorful scales. The nickname millionfish refers to the breeding habits of the fish. A female can have 50 to 100 babies every month!
• Fighting malaria: Guppies are small tropical fish that play a part in the fight against malaria. Mosquitoes are known carriers of this disease. To reduce the mosquito population, these fish have been released into bodies of water around Asia and other areas to eat mosquito larvae.
• Birth announcement: While most fish reproduce by laying eggs, guppies do things another way. The eggs are incubated while still inside the female guppy. The female is pregnant for about a month, then gives live birth to dozens of babies.

Guppy Classification and Scientific Name

Poecilia reticulata is the scientific name for these fish. Poecilia is a Greek word meaning speckled and reticulata is Latin meaning a net-like pattern. These wild fish are also called rainbow fish and millionfish.

They belong to the Poeciliidae family and are in the class Actinopterygii.

There are 276 species of these fish. A few examples include:

• Endler guppy
• Swamp guppy
• Cobra guppy
• Glass guppy
• Leopard guppy

Guppy Species

Guppy fish are categorized in many ways including by their scale colors, scale pattern and even the shape of their tail. Three of the most well-known types include:

• Fancy guppy: They are known for their especially bright colors and elaborate tailfins. They can have fan tailfins, triangle tailfins, and veil tailfins to name a few.
• Endler’s guppy: These fish are less colorful than fancy guppies and have a simple round or spade tailfin. Someone who wanted a colorful addition to their aquarium would likely choose a fancy over an Endler’s guppy.
• Swamp guppy: This type is rarer than those in the above two groups. They are found in streams around Trinidad and prefer a habitat with brackish water.

Guppy Appearance

Guppy fish can be yellow, red, blue, green, black, white, or orange depending on their species. For instance, a blue cobra guppy has a dark blue body with a vertical black striped pattern that looks like a cobra snake’s back. It has a triangle tailfin of bright blue with a yellow and black pattern mixed in. Alternatively, a red guppy has scales that feature a mixture of bright red and gold. Its fan tailfin is bright red with light gold at its tip. From leopard to cobra guppies to the Dumbo ear dragon guppy, there are unique colors and scale patterns throughout this group.

These fish have a number of different tailfin shapes as well. Fan tail, flag tail, lyre tail, sword tail, round tail, and veil tail are a few examples. The longest this fish can get is 2.4 inches.

The bright coloration of these fish makes them a clear target for many predators. However, they do have a unique defensive feature. When a predator approaches, the fish’s irises turn from silver to black. This allows the fish to dart out of the path of danger while the predator focuses on what it thinks is the fish’s head.

In addition, wild guppies swim in large schools containing sometimes hundreds of fish. This means if a predator attacks, there’s a good chance that most of the fish in the school will be able to get away.

Guppy Distribution, Population and Habitat

Brazil, Jamaica, Antigua, Barbados, Venezuela, and the U.S. Virgin Islands are just a few of the places where these wild fish are found. In fact, they are now found everywhere in the world except Antarctica. They are able to live in freshwater or brackish water. Their habitat includes streams and shallow pools near larger bodies of water.

The exact population of this tropical fish is unknown. However, the conservation status of the fish is Least Concern. These wild fish reproduce in large numbers which helps their population remain stable.

Guppy Predators and Prey

Most of these fish grow to be about one inch in length, so it’s no surprise they have many predators. Wild guppies swim in schools of hundreds of fish so a predator is able to grab several at one time.

What eats guppies?

Larger fish such as the blue acara and pike cichlid are predators of these fish. Sea birds such as kingfishers are predators of this tiny tropical fish.

What do guppies eat?

These fish are omnivores. They eat algae, plant particles and mosquito larvae.

They live in large schools and participate in foraging behavior. This means they search for food while in these large groups. So, when a supply of algae is found, more of them are able to share the nourishment.

The official conservation status of these fish is Least Concern.

Guppy Reproduction and Lifespan

Breeding takes place year-round for these fish. A female mates with multiple males. She is pregnant with fertilized eggs for about one month. They are different from many other types of fish in that they give live birth to their young. A female can have from 50 to 100 babies also called fry. Due to this breeding activity, a female can have from 2 to 3 generations of fry each year. Fry begin living independently right at birth.

Males are sexually mature at 7 weeks old while females reach sexual maturity at 10 to 20 weeks old. Normally, these fish live to be 2 years old.

These fish are carriers of many parasites which is another factor affecting their lifespan. Gyrodactylus turnbulli is one of the most common parasites inhabiting the gills and fins of guppies. They spread these parasites to other guppies and even other species of fish.

Guppies in Fishing and Cooking

These are very small fish measuring no more than 2.4 inches in length. So, they are not targets of commercial fisheries.

Some recreational fishermen may try to capture rare specimens in small nets to sell to guppy hobbyists or pet shops.

These fish are not cooked and eaten because of their size.