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15 Attractive & Colorful Freshwater Fish (And How To Care For Them)

There is nothing more exciting than finally going to the local fish store with the intentions of stocking your dream aquarium. Lets be honest…I know you have imagined it a million times – we all have.

Fortunately, there is an incredible amount of variety within the aquatic world to choose from. Many colorful freshwater fish are compatible with one another as tank mates, allowing hobbyists to create a rainbow of colors within their aquariums.

This list highlights 15 of the most colorful freshwater fish for all experience levels, tank sizes, and aquarium types!

colorful freshwater fish

15 Most Colorful Freshwater Fish

Without further ado, here are 15 colorful freshwater fish that everyone should keep at least once:

1. Discus

discus fish

Discus are considered the “holy grail” for a ton of freshwater fish keepers. These amazingly colorful freshwater fish come in an array of patterns, and are identifiable by their unique red irises.

That being said, the discus is a high maintenance fish due to its requirement for extremely clean water with a specific pH level of 5-7. Discus prefer aquariums with dense foliage and natural hiding spots to mimic the environment of their wild counterparts. They eat live foods, including brine shrimp and worms. The brilliant striped pattern and striking colors of the Discus make it a popular choice for freshwater aquariums.

  • Ease of care: Intermediate-Advanced due to the complex habitat and feeding requirements.
  • Compatibility: Excellent; these gregarious fish do well in schools and with other fish, including many others on this list!
  • Required tank size: 40 gallons for an individual; 50+ gallons for a small school (4-6 discus)

2. German Blue Ram

german blue ram
German Blue Ram (source)

The German Blue Ram stands out for the fluorescent blue dots that cover its otherwise yellow-orange body, as well as its’ unique spiked dorsal fun. Rams are also highly compatible with many other species of fish due to their social and peaceful nature. Rams can be kept as individuals, in small schools, or just with a pair, as these fish tend to choose only one mate. They are also a much lower maintenance fish due to their temperament, and simply require a freshwater tank (preferably with soft water) with “caves” or other hiding spots, especially in the case of a breeding pair who will need a location to lay eggs.

Check out our German Blue Ram care guide for more information on this species.

  • Ease of care: Beginner. Low maintenance fish with enormous payoffs.
  • Compatibility: Excellent; very social fish.
  • Required tank size: 30 gallons or more.

3. Gourami

gourami fish

There are many varieties of gourami that may catch the eye of aquarists seeking highly colorful fish. The Flame dwarf gourami features deep blue coloration that transitions into a bright flame red towards the tail. The neon blue dwarf gourami is just that- striking neon blue with spots of red-orange along its scales.

There are many other variants of the gourami which differ by shape and size, though females tend to be paler in color across all variants. The gourami is a peaceful fish who requires dense foliage to swim through, and can be kept as individuals or a mating pair. Mates will use the foliage in the tank to help create the bubblenests as cover for their eggs.

  • Ease of care: Intermediate, as their water must be kept fresh and changed frequently in order to avoid disease.
  • Compatibility: Good; males may become territorial depending upon the combination of fish present. This can be abated with the right mixture of size and species and the right environmental conditions.
  • Required tank size: 10+ gallons.

4. Diamond Neon Tetra

neon tetra

These small fish are happiest when kept in schools of 5-6 or more, and have plenty of features within the tank to use as hiding spots. The diamond neon tetra specifically has a blue stripe that runs down the side of its body interrupting the overall reddish hue, in addition to a metallic diamond shape in the region of the dorsal fin which develops as the fish matures.

Tetras can be a bit skittish, but when provided with a small school and sufficient hiding spots they will feel secure enough to make their presence known and explore the tank.

  • Ease of care: Beginner-Intermediate.
  • Compatibility: Peaceful fish as long as they are kept in a small school.
  • Required tank size: 15+ gallons.

5. Endler’s Livebearer

endler's livebearers

There are many varieties of the Endler’s Livebearer fish, all with exotic colorations. The Red Flame Endler’s Livebearer is among the most popular due to its electric red and green/teal tones.

Endlers require harder water than some other freshwater species, which must be considered when selecting tank mates. These fish stay quite small, the males only reaching an adult size of approximately 1”. Though they are not schooling fish, they are friendly and can be housed in the same tank amicably.

  • Ease of care: Beginner.
  • Compatibility: Peaceful fish who pair well with gourami, tetras, cichlids, and many others.
  • Required tank size: 20+ gallons.

6. Killifish

Killifish (source)

The killifish is an active schooling fish who is known for its variety of neon colors and its tendency to jump. Killifish are best kept in small schools with only one male and several females, as the males can become aggressive towards each other. Some Killifish species are endangered and cannot be kept by hobbyists, but there are more common varieties available for sale. Killifish, along with most of the other fish on this list, require an abundance of hiding spots and adequate foliage to feel secure.

  • Ease of care: Beginner-Intermediate depending on the exact species.
  • Compatibility: Varies based on species. Some can be housed in communities with tetras, darios, etc, but other species should be kept in species-only tanks due to their special requirements.
  • Required tank size: 20+ gallons per mating pair.

7. Boeseman’s Rainbowfish

Rainbowfish (source)

This rainbowfish species is unique in its coloration, which starts as a metallic silver/grey at the head and becomes an increasingly bright yellow/orange towards the tail. This color is encouraged by a specified diet and the proper maintenance of the tank water’s hardness and pH.

Rainbowfish grow to an adult size of 3-4”, and are happiest when kept in groups of 6-8. The Boeseman’s rainbowfish also require dense foliage within the tank in addition to an area for open swimming, in order to recreate the conditions of their natural habitat.

  • Ease of care: Intermediate due to tank requirements.
  • Compatibility: Good, but should be housed with other fish of a similar size to avoid startling smaller fish. Possible tank mates include darinos, cichlids, catfish, or other rainbowfish.
  • Required tank size: 30+ gallons.

8. Fantail Guppy

fantail guppies

Fantail guppies are a classic choice for hobbyists looking to add some color to their tanks. They get their name from their dorsal fin which is large in comparison to its body, and fans out broadly.

Fantail guppies can vary in color from neon yellow to lime green to teal, all of which are often interspersed with black or silver – making the colors even more striking. Guppies stay relatively small, at approximately 2.5”, and are most at home in small schools. They are friendly fish which do well when housed with other schooling fish such as tetras, gouramis, or platies.

  • Ease of care: Beginner.
  • Compatibility: Excellent, as long as they are not put in tanks with fish who might prey on them.
  • Required tank size: 10+ gallons (rule of thumb is to provide ~2 gallons of water per guppy).

9. Cherry Barb

cherry barb
Cherry Barb (source)

These fish are unique for their coloration, which changes in males during spawning. The overall color of the fish is silver or white, but during spawning males turn bright cherry red, hence their name.

Cherry barbs are easygoing fish who maintain require room to swim openly, as well as vegetation in which to hide. They may be skittish individually but are comfortable in small schools.

  • Ease of care: Beginner.
  • Compatibility: Good, especially when housed with other small schooling fish such as tetras, mollies, or danios.
  • Required tank size: 10+ gallons.

10. Electric Blue Hap

electric blue hap
Electric Blue Hap (source)

The male of this species is the one who makes the list, with his stunning cerulean blue scales. The female counterpart to the Electric Blue hap is actually a gray-silver tone. The hap is one of many species of cichlid with a slightly forked tail.

Blue haps are schooling fish who are best kept in groups of 3-6 females and 1 male, or in breeding pairs. These cichlids grow to about 6” in length when fully mature, and their tank environment should mirror that of their natural habitat, with large rocks and hearty plants – but no driftwood. These stunning fish stand out in any aquarium.

  • Ease of care: Beginner.
  • Compatibility: Only one male of the electric blue hap should be permitted per tank. Otherwise, good compatibility with some other species.
  • Required tank size: 55+ gallons.

11. Rubin Red Peacock Cichlid

Red peacock cichlid
Red peacock cichlid (source)

The Rubin Red Peacock cichlid is appropriately named; its scales form a patchwork of bright red to deep blue to violet scales peppered with silver. This popular cichlid variant is much like the Electric Blue hap in the sexual dimorphism of its scale colors, with the females having mottled gray or brown scales. The Peacock cichlid follows the same habitat and pairing requirements as its Electric blue counterparts.

  • Ease of care: Beginner.
  • Compatibility: Again, only one male should be allowed per tank to reduce aggression. Cichlids are compatible with other cichlids (varies by species), and other small to medium sized community or schooling fish.
  • Required tank size: 55+ gallons.

12. Flowerhorn Cichlid

Flowerhorn Cichlid
Flowerhorn Cichlid (source)

This is a peculiar fish that stands out from the other cichlid varieties in a big way. The Flowerhorn cichlid is so named for the large mass on its forehead, present in both males and females. Its bulky body features a variegated pattern with extreme color variation based on breeding and hybridization. Additionally, the colors of an individual flowerhorn can change until maturity is reached. The flowerhorn cichlid does require plenty of space, and is known for being territorial.

  • Level of care: Beginner.
  • Compatibility: Low. Flowerheads can be aggressive and interact poorly with tank mates. It is recommended to provide an individual tank for flowerhorns, in order to avoid causing stress in smaller fish. When kept individually, they are pleasant fish with immense payoff for their size and beauty.
  • Required tank size: 55+ gallon.

13. Oscars

oscar cichlid
Oscar Cichlid (source)

Oscars are another variety of cichlid, with their own array of color, shape, and size variations. In addition to their remarkable pigmentation, Oscars are also renowned for their intelligence among other fish species. Some Oscars have been said to play and interact with their owners, including showing signs of “excitement” when their owner enters the room.

One drawback of the Oscar fish is the cichlid aggression that tends to arise from these fish. Despite this, it is possible to house Oscars with tank mates, so long as they are introduced and housed responsibly and with discretion in order to avoid the Oscars showing aggression.

  • Level of care: Intermediate-Advanced due to its unique habitat and “personality” requirements.
  • Compatibility: Oscars should be given enough room to reduce the chance of aggressive behaviors, and tank mates should be introduced with great discretion.
  • Required tank size: 55+ gallons per fish.

14. Duboisi Cichlid

Duboisi Cichlid
Duboisi Cichlid (source)

The Duboisi is one of many varieties of the Tropheus cichlids, popular for their high level of activity and individual personalities. These cichlids undergo a transformation in color and pattern as they age, making them a distinctive choice for color-seekers. Juvenile duboisis are black with blue-white spots, and as the fish age they lose their spots and gain a bluish tinted head and a yellowish-white band around their middle. They are best kept in species-specific tanks in schools of approximately 8-10 fish, due to their strong social structure and aggressive nature.

  • Level of care: Intermediate-Advanced.
  • Compatibility: Should be kept in species-specific tanks due to aggressive tendencies.
  • Required tank size: 55+ gallons per fish.

15. Zebra Danio

zebra danio
Zebra Danio (source)

The name of this fish speaks for itself! The Zebra danio is characterized by horizontal stripes that run the length of their body, and may be silver, gold, or white in color, contrasted by black, deep indigo, or even dark green stripes. These fish provide excellent visual divergence from some of the other fish listed here, and are perfect to include with other colorful freshwater fish due to their peaceful nature. Danios stay small even into adulthood, maintaining a length of about 2”. Danios are highly social and should only ever be kept in small schools.

  • Level of care: Beginner.
  • Compatibility: Excellent, especially when kept as a school within a community tank.
  • Required tank size: 10+ gallons.

A few more colorful fish for freshwater tanks:

Here are a few more colorful freshwater fish for those who don’t like the options on our detailed list above:

  • Yellow Lab Cichlids
  • Betta Fish
  • Mollies
  • Swordtails
  • Tiger Barbs
  • Platties
  • Golden Plecos
  • Rosy Barb

Final Thoughts

Colorful fish aren’t only for saltwater aquariums!

As you can see, there are tons of colorful freshwater fish available for purchase at most local fish stores. In addition, most of the fish on our list don’t require specialized care and do great in community aquariums.

Make sure to keep up with basic water changes and feedings and your freshwater aquarium should be healthy, lively, and colorful for years to come!

Jason Roberts
About Jason Roberts
Jason is an aquarium fanatic that has been a fish hobbyist for almost three decades.

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