Rainbow Fish are a relatively recent addition to the aquarium ecosystem, and although there are several colorful varieties available, they are calm fish that thrives in large numbers.
You’ve come to the right place if you’re looking for a chance to see numerous sorts of Rainbow Fresh Water Fish in one location so you may choose the one you want best.
To give you a taste of what’s available, we’ve picked 13 different Rainbow Fish breeds. We think you’ll be surprised by breed variations when we show you a photograph and provide you with a few facts about each breed.
To help you make an informed purchase, join us as we explore tank size, pH, maximum growth size, colors, and more.
The threadfin rainbowfish has one of the most unusual body forms around, which is hardly surprising. The filament extensions on the dorsal fins of male members of this species give them an elegant appearance. These fish have silver bodies with black and red markings on their fins in general.
Keeping these fish in schools is critical since they are so tiny. They should be kept away from fin-nippers, who may be tempted to bite into their streaming dorsal fins, even though they are lovely community fish.
Boesemani rainbowfish were originally discovered in Indonesian seas, and they prefer the tropical environment of their native habitat. Therefore, your water should be maintained at an temperature of 81-86°F with a neutral pH range between 7.0 and 8.0 to ensure that it is maintained properly.
Hobbyists should still be cautious when it comes to tank mate selection, even though these are generally peaceful fish. Smaller, more docile tankmates may be stressed by Boesemani rainbowfish, which are large fish that swim quickly.
These fish have an appearance that is as magnificent as one would anticipate. It has a cool head, with blues, greens, and purples in the front and a stunning red, orange, or yellow in the back.
The Eastern rainbowfish, like most other species, benefits from having its tank cleaned on a regular basis. These fish are tough on the exterior, but they may be vulnerable to water quality changes. To keep their fish healthy, hobbyists should perform a 30% weekly water change.
If they are without a shoal, these fish may be skittish. As a result, it’s crucial to keep at least six fish together at all times. Make sure that you have enough room in your tank to do so!
Aged up to four inches long, Australian rainbowfish are very easy to care for. They are named after Australia, and they are typically silver and yellow in color.
It is a schooling fish that prefers a heavily planted environment, although not one that is so dense that the fish can’t swim around freely.
Rainbowfish prefer to swim in a lot of water, so they require an aquarium that is at least four feet long. They’re sold as young fish, roughly one to two inches in size, and they’re omnivores.
The Melanotaeniidae family of fish includes the banded rainbowfish, which is well-known for its vivid colors and calm demeanor in captivity. Swamps, rivers, lagoons, and lakes in North Australia are home to these rainbowfish.
The bodies of young banded rainbowfish are broad, with brilliantly coloured anal, dorsal, and caudal fins, as well as a black mid-lateral stripe. Wider bodies and brighter colors characterize male banded rainbowfish. Males and femen also have a raised forehead, but only females do.
Axelrodi rainbow fish
The blue color of Axelrodi rainbowfish (Chilatherina axelrodi) may reach 4 inches (10 cm) in length. They are also easy to care for and have terrific dispositions, much like the Murray River rainbowfish. Males are more brightly colored than females and prefer a live food diet.
If you want to add a variety of gorgeous hues to your aquarium, the Axelrodi rainbow fish is a excellent selection. To emphasize the natural color of the fish, you should use black-colored gravel.
Because of their lovely colors, peaceful demeanor, and suitability for community tanks (aquariums), Australian rainbowfishes are very popular. This fish is known to breed in captivity, and new specimens are frequently found and sold.
New Guineans have a five-year lifespan and are the Axelrodi rainbow fish. This fish needs a normal temperature of 77 to 81°F (27-30 Celsius) and has a minimum tank size of 20 gallons. By nature, the Axelrodi rainbow fish is an omnivore, surface feeder, and egg layer.
Crimson Spotted Rainbow Fish
For over 100 years, the crimson spotted rainbow fish has been a popular pet. When fully developed, it may reach nearly 5 inches in length, however they are more often seen to be about 4 inches long.
The gills have a single red dot, and their fins may range in color from yellow to red. Males are somewhat smaller than females and have more vivid colors.
One of the few rainbowfish species that may be kept with nano shrimp is the Pacific Signifier, which we adore! The pacific signifier, like other large fish, lacks the ability and inclination to eat little sea creatures. This implies that these fish can be kept in most tank conditions.
The Pacific Blue Eye Signifer Rainbowfish is another name for this fish, and it’s easy to see why. Their yellow and blue bodies are contrasted by their large, neon-blue eyes.
Celebes rainbowfish originate from Indonesia and come in a variety of colors. They are simple to care for. They grow to be around three inches long and require a large tank of water to swim in, so don’t expect one that holds less than 20 gallons.
These are generally dark in color, and their color brightens when they are exposed to natural light. You should maintain the water conditions of the Celebes rainbowfish as constant as possible because it is sensitive to changes in its environment. Live foods, flakes, and algae are among the live foods they consume.
Because of its vivid colors and social nature, this variety of rainbowfish is highly regarded in aquariums.
The head of a mature male Bleher’s rainbowfish turns bright yellow, orange, or red toward the tail, becoming silver or blue-gray. Females of Bleher’s rainbowfish have drabder, faded hues towards the tail than males. They are whiter and more transparent.
The Melanotaeniidae family includes the Breher’s rainbowfish. Gerald Allen and a German Botanist named Heiko Bleher discovered the new species of fish in 1982, and he named it after his friend in 1985.
In the foothills of Lake Holmes in Indonesia, the Bleher’s rainbowfish hails from shallow rivers surrounded by jungle and abundant plant life.
The Praecox rainbow fish
The Dwarf Neon rainbow fish is another name for the Praecox rainbowfish (Melanotaenia praecox). They feature two dorsal fins and unusually large eyes.
Because of the size of their mouths, they are omnivores and can only eat tiny morsels of food. Rainbowfishes lay eggs in temperatures of 75-82°F (22-28°C), and they thrive in such temperatures. In less than a week, their eggs hatch.
Praecox rainbowfishes are a peaceful species that grows to about 2.5 to 3 inches (6 cm) in length. They are easy to care for as well. The lifespan of these fish is approximately 3-4 years, and they are native to Malaysia and New Guinea. A ten-gallon tank is required for Praecox rainbowfishes.
Checkered Rainbow Fish
Rivers, streams, swamps, and lagoons are natural habitats for the Checkered Rainbow Fish. Between 79 and 91 degrees, they prefer a well-planted aquarium with plenty of thickgrowth and warmer water.
They can tolerate a wide range of pH, from 6.5 to 8, and feel fine if it stays there. Another factor to consider before buying this fish is that they prefer to be with other fish of similar size. In the presence of competing males, males, particularly, will only display their best color.
On our list, we’ve got the first Southeast Asian rainbowfish! The red rainbowfish is ideal for beginners, coming from Indonesia. These hardy fish are suitable for both novices and pros since they are non-aggressive and non-hostile.
Shaoling in groups of eight to ten is a favorite activity for these fish. Male fish, since they are the ones with the red coloration on their bodies, will be required by most hobbyists to make up at least half of the overall population. Brown is the color of female fish and juvenile fish.
These fish are used to warm waters because they originate from a location close to the equator. Make sure your water is between 70°F and 79°F!
Because they are difficult to care for and have aggressive temperaments, Pseudomugil rainbowfish is a little different than other types. They are a colorful fish that is also fun to have around, and they come in a wide range of colors and only grow to be about two inches long.
The Pseudomugil rainbowfish are schooling fish with males that are bigger and have greater dorsal fins than females. They come mostly from New Guinea and Australia. They’re omnivores, and 20 gallons of water in a tank is necessary for them.
Lake Kutubu Rainbowfish
The vividness of the lake Kutubus has made them popular in aquariums. They can alter color incredibly rapidly.
Males of the adult fish are vivid blue and teal, with a yellow belly and a cobalt blue stripe down both sides. The bodies of juvenile Lake Kutubu rainbowfish grow wider with maturity.
Lake Kutubu rainbowfish come from Papua New Guinea’s Lake Kutubu and the Kikori River, and they belong to the Melanotaeniidae family.
Red Irian rainbow fish
The Red Irian rainbowfish has a lovely crimson color and a nice temperament. They grow from 4 to 6 inches (15 cm) long and have a lifespan of nearly 5 years. They are fairly easy to take care of. Australia and New Guinea are home to the Red Irian rainbow fish.
The individuals of this rainbow fish species are vivid, however the females are silvery.
A tank with a dark-colored gravel bottom and at least 50 gallons of water is required for the Red Irian rainbow fish. The males’ color dulls when the females are not around, making them a very active kind of rainbow fish.
In comparison to herbivorous fish, the Red Irian rainbow fish is more carnivorous. They prefer water temperatures of 72-79°F (22-24°C) to flourish.
Desert Rainbow Fish
The sandy-colored body of the Desert Rainbow Fish is topped with orange-tinted fins. Because these fish prefer to be in schools, buying a few at a time is preferable. These fish prefer to dwell at the top of the tank and are calm, not fighting with other kinds of fish.
If they get good care and have at least 20 gallons to swim in, a full-grown adult Desert rainbow fish may reach 4 inches long and live for 5 years.
Murray River Rainbowfish
Murray River rainbowfish have silvery-green scales with a brown border, and are also known as Australian rainbowfish. Their fins, on the other hand, are a beautiful mix of yellow and crimson. Bright orange stripes run down the backs of male fish.
Murray Rivers, like most rainbowfish, are laid-back when it comes to eating. Mosquito larvae and algae are among the foods they consume in the wild. They are happiest on flake diets in captivity.
Turquoise rainbowfish grow to be as long as four inches when they are just one or two inches long. They have pleasant temperaments and are a teal-blue color, making them simple to look after.
Provided they are small in size, they can eat frozen foods, live foods, and flakes. They are egg layers that spawn in low to moderate lighting.
Turquoise rainbowfish, like most other rainbowfish varieties, prefer tanks with at least 50 gallons of water and appreciate aquariums with many plants and adequate swimming space.
The dazzling hues and sociable nature of neon rainbowfish make them popular. The iridescent blue scales and vivid fins of neons create a wide body. Females have narrow bodies and yellow/orange fins with silver trimming, whereas male neon rainbowfish have wider bodies and red fins.
Peacock rainbowfish, dwarf neon rainbowfish, praecox Rainbowfish, and diamond Rainbowfish are all names for this species of rainbowfsh.
The Melanotaeniidae family of neon rainbowfish originates from Indonesia’s Mamberamo River Basin.
Lake Wanam rainbowfish
Another rainbow fish that is calm in disposition and indigenous to New Guinea is the Lake Wanam rainbowfish (Glossolepis wanamensis). They grow up to 3 inches (8 cm) and are fairly easy to care for. This fish is an omnivore that eats live foods and has a lifespan of 5 years.
The Lake Wanam rainbowfish prefer tanks that hold at least 20 gallons of water and maintain a temperature range of 79-86°F (26-30°C).
Dwarf Rainbow Fish
The large eyes and small size of Dwarf Rainbow Fish have earned them a cult following. The Dwarf Rainbow will only grow to about 2 inches in comparison to other Rainbow Fish that grow to be 4 or more inches.
Females have yellow fins and are smaller than males, with more silver on their bodies. The males’ fins are frequently crimson, with flashes of neon blue strewn about.
The colorful fins and tail of the Madagascar rainbowfish are what set it apart. The fins are colored red and black, and the fish have silvery-grey bodies. It’s preferable to keep them in tanks that are properly planted to highlight their distinctive coloring.
Moreover, these fish prefer to live in groups of eight to ten, which will result in a more natural-looking presentation by hobbyists. These fish may be pleasant, but they may also scare other species. Peaceful, but confident fish, such as similarly-sized catfish, should make up tankmates.
The Peria Creek and Kwagira River in Papua New Guinea are home to the Forktail rainbowfish, which belong to the Pseudomugilidae family.
Because fishkeepers like to see the brightening of the fish’s colors during breeding season, these silvery, blue-eyed forktail rainbowfish are popular.
During the breeding season, the male forktail rainbowfish’s dorsal and pectoral fins are sharp and curvy. Male and juvenile forktail rainbowfish have brighter fins and lines at the bottom and top of their bodies than female or juvenile fish.