39 Most Colorful Fishes for Freshwater Aquarium

By Alberto Roy

Updated on:

Explore the vibrant world of freshwater aquarium fish by taking a glimpse at the most colorful ones. In compiling this list, I’ve gathered images of fish that showcase a minimum of three distinct body colors, including hues present on their fins.

Discover the enchanting world of freshwater aquariums with a dazzling array of colorful fishes that add vibrancy and life to your aquatic setup.

These captivating aquatic companions come in a spectrum of hues, transforming your tank into a lively underwater masterpiece. From vibrant reds and blues to dazzling yellows and greens, the diversity of colors these fishes exhibit is truly a feast for the eyes.

Imagine the graceful movements of a schooling tetra, its iridescent scales catching the light and creating a shimmering effect as it darts through the water.

Whether you’re a seasoned aquarium hobbyist or a beginner, introducing these colorful fishes to your freshwater setup promises to elevate the aesthetic allure of your aquatic haven.

Top ColorFul Freshwater Aquarium Fishes

1. Blue Gularis Killifish

Adult Size:3 – 5.1 inches (up to 12 cm)
Minimum Tank Size:20 gallons but 30 would be better
Water Temperature Range:72 to 79°F (22 – 26°C)
Suitable for beginners:Not the best option for new hobbyists due to their semi-aggressive temperament towards other males of their kind and their relatively large adult size

If you’re seeking a vibrant and multi-colored tropical fish to enhance your aquarium, the Blue Gularis Killifish stands out as an excellent option. This particular species falls within the Fundulopanchax genus, known for being egg-laying killifish.

It’s important to note that while the Blue Gularis Killifish can coexist with other tank mates, these colorful fish thrive most in a dedicated, well-planted tank of their own.

2. Eggersi Killifish

Eggersi Killifish in a planted tank
Adult Size:1.5 – 2 inches (around 5 cm)
Minimum Tank Size:10 gallons
Water Temperature Range:Between 72 and 77°F (22 to 25°C)
Suitable for beginners:Yes, if you keep a single male Eggersi per aquarium

The Eggersi Killifish species are known among hobbyists for their bright blue-ish and red coloration and have a reputation of a peaceful freshwater fish. The Eggersi Killifish is one of more than 70 species from the Nothobranchius genus of small killifish.

If you consider adding this species to your colorful community aquarium, remember that male Eggersi Killifish tend to show aggression toward other male Killifish.

Recognized among hobbyists for their vibrant blueish and red hues, the Eggersi Killifish species enjoys a reputation as a peaceful freshwater fish. Belonging to the Nothobranchius genus, which includes over 70 small killifish species, the Eggersi Killifish adds a colorful dimension to aquariums.

If you’re contemplating introducing this species to your lively community aquarium, it’s crucial to be aware that male Eggersi Killifish may exhibit aggression, particularly towards other male Killifish.

3. True Red Terror Cichlid

Adult Size:Males grow to up to 18 inches (45.7 cm)
Minimum Tank Size:180 gallons
Water Temperature Range:72 to 86°F (22.22 to 30°C)
Suitable for beginners:No

Hailing from the Mesoheros genus, the True Red Terror Cichlid stands out as a visually striking choice, in my view, surpassing the commonly favored Green Terror Cichlid.

This particular species attains a significant size and exhibits territorial behavior, making it unsuitable for those new to the hobby.

However, once you’ve gained sufficient experience, I highly recommend experimenting with Red Terror Cichlids. Observing them intensify in color while diligently guarding their offspring proves to be a highly enjoyable spectacle.

The hues of the males become exceptionally vibrant during their “patrolling” activities.

4. Paradise Gourami Fish

Adult Size:4 inches (about 10 cm)
Minimum Tank Size:20 gallons
Water Temperature Range:61 to 75°F (16 to 24°C)
Suitable for beginners:Not really recommended if you don’t have a little bit of experience and if you haven’t looked after any aggressive fish before

While on the lookout for a vibrant orange or red-colored aquarium fish, I discovered the Paradise Gourami, belonging to the Macropodus genus.

Their stunning orange and blue color patterns instantly captured my interest.

A notable advantage is their ability to withstand cooler water temperatures. However, caution is advised regarding their aggressive behavior towards other male Gourami fish.

5. Apistogramma Macmasteri

Adult Size:2.5 – 3 inches (about 7 cm)
Minimum Tank Size:20 gallons
Water Temperature Range:78 – 82°F (24 to 28°C)
Suitable for beginners:Yes, after doing some reading on the species

The Apistogramma Macmasteri serves as a splendid example of a captivating and exotic fish that can infuse vibrant colors into your tropical freshwater aquarium.

Belonging to the extensive Apistogramma genus, these Apistogramma species display striking yellow, blue, reddish, and orange color patterns. Being among the smallest varieties of dwarf cichlids, they make for an ideal addition to smaller planted aquariums.

However, exercise caution when housing males together, as they can exhibit territorial behavior.

In a 20-gallon aquarium, creating ample hiding spots is advisable to help these beautiful fish acclimate comfortably.

6. White Cloud Mountain Minnow

Adult Size:1.4 inches (3.6 cm)
Minimum Tank Size:10 gallons
Water Temperature Range:59 to 71°F (15 to 22°C)
Suitable for beginners:Yes

If you’re on the lookout for a petite yet vibrant addition to your home aquarium, consider the White Cloud Minnow—a fantastic choice.

Derived from the name of the Chinese Boy Scout, Tan, who initially discovered the first specimen, the genus Tanichthys characterizes these minnows.

These diminutive minnows reach a mere size of 1.4 inches, showcasing lively silver stripes set against a dark green body, complemented by bright red dorsal and caudal fins.

Not only are they visually striking, but they also make an excellent selection for non-aggressive fish suitable for coldwater freshwater aquariums. Additionally, they are an ideal schooling species for beginners.

7. Chili Rasbora Fish

By amanofscience

Adult Size:up to 0.78 inches (2 cm)
Minimum Tank Size:5 gallons
Water Temperature Range:75 to 82.4°F (23.9 to 28°C)
Suitable for beginners:No

The Chili Rasbora, a nano freshwater fish hailing from the small genus Boraras, typically reaches a size of around 0.8 inches. These specimens captivate with stunning color patterns and a distinctive bright stripe that spans the length of their bodies.

Ideal for a vibrant community aquarium hosting small and tranquil inhabitants, Chili Rasboras are a perfect fit due to their diminutive size and timid nature.

For optimal well-being, Chili Rasboras thrive in tropical waters and should be kept in schools of at least six individuals.

8. Red Neon Stiphodon Goby

Adult Size:up to 2 inches (5cm)
Minimum Tank Size:10 gallons for a single fish, 20+ for a school
Water Temperature Range:70 to 82°F (21 to 28°C)
Suitable for beginners:Yes

The Neon Stiphodon Goby, hailing from the genus Stiphodon, boasts captivating orange and reddish coloration, predominantly noticeable in males.

In my view, the Red Neon Stiphodon Goby stands out as one of the most intriguingly colored fish. Furthermore, their peaceful demeanor makes them a preferred choice as companions for a lively community aquarium.

9. Snakeskin (Cobra) Guppy Fish

By TheJoshDillon

Adult Size:up to 1.5 inches (up to 3.8 – 4 cm)
Minimum Tank Size:5 gallons because Guppies have a very low bioload
Water Temperature Range:72 to 80°F (22 to 28°С)
Suitable for beginners:Yes

Currently, one of my preferred Guppies is the Cobra guppy, primarily due to its vibrant red, blue, orange, and green patterns, with some specimens even resembling a tiger.

These livebearing fish belong to the genus Poecilia. Hailing from South America, Guppies have gained recognition worldwide, and many novice hobbyists opt to include them in their tranquil fish tanks.

10. Celestial Pearl Danio

By IsaacMTSU

Adult Size:close to 1 inch (2.5 cm)
Minimum Tank Size:10+ gallons for a school of 6 to 7
Water Temperature Range:between 71 and 78°F (21.6 to 25.5°C)
Suitable for beginners:Yes

I find the beauty of the Celestial Pearl Danio fish truly captivating, with delicate orange and violet dots adorning their distinctive silvery bodies.

Belonging to the genus Danio, a term translated from Bengali meaning “of the rice field,” the Celestial Pearl Danio is known for its peaceful nature. I highly recommend selecting them as vibrant schooling fish for your subtropical freshwater aquariums.

11. Clown Loach

By blobb123

Adult Size:5.9 to 12 inches (between 15 and 30.5 cm)
Minimum Tank Size:70 gallons for a single specimen, but 150 gallons for a school of 5
Water Temperature Range:77 to 86°F (25 to 30°C)
Suitable for beginners:A certain amount of experience is needed as this fish requires pristine water quality and a very large tank in order to remain healthy

Also recognized as the Tiger Botia, the Clown Loach stands as the sole member of the Chromobotia genus.

Distinguished by its striking stripes resembling those of a real tiger, this fish is widely favored for bringing vibrancy to aquariums.

Known for their compatibility with other peaceful fish and their ability to consume pest snails, Clown Loaches are an excellent choice if you aim to introduce an exotic touch to your tropical fish tank.

12. Chinese Hillstream Loach

By Bangshak

Adult Size:up to 3 inches (around 7 cm)
Minimum Tank Size:55 gallons for a school of 3 to 4 fish
Water Temperature Range:68 to 75°F (20 to 23.8°C)
Suitable for beginners:Not recommended for beginners, as those fish need special conditions such as moderate water currents in a large aquarium

Often referred to as the Spotted Loach, the Chinese Hillstream Loach commands attention with its vibrant dotted and labyrinthine patterns.

Hailing from the Pseudogastromyzon genus, this fish is renowned for its sociable and active nature, thriving best when in a group of at least three others of its kind.

13. Samurai Gourami Fish

By myth1n

Adult Size:up to 2 inches (about 5 cm)
Minimum Tank Size:30 gallons for a school of 6 fish
Water Temperature Range:75 to 80°F (between 23 and 26°C)
Suitable for beginners:Yes

The Samurai Gourami fish are recognized for the presence of dark red bars that adorn the sides of their light blue bodies.

Gouramis of the Samurai variety, such as those from the Sphaerichthys genus, are characterized by their shy nature and thrive when kept in a group.

14. African Butterfly Fish

By ry5458

Adult Size:around 5 inches (12 cm)
Minimum Tank Size:40 gallons
Water Temperature Range:73 to 86°F (22 to 30°C)
Suitable for beginners:Not the best choice for a first fish, because they require high maintenance and pristine aquarium water

The African Butterfly Fish is among the most captivating fish I’ve encountered.

This surface-dwelling hunter belongs to the Pantodon genus.

The intriguing color combination of their dark-patterned butterfly fins sparks curiosity not only in me but also among other hobbyists.

15. Tropheus Kasanga Rainbow

By kilroy

Adult Size:around 5 to 5.9 inches (up to 14 – 15 cm)
Minimum Tank Size:75 gallons
Water Temperature Range:75 to 80°F (24 – 26°C)
Suitable for beginners:No

Once you lay eyes on this tropical fish, its stunning and vibrant rainbow hues become unforgettable.

Named after its radiant appearance, the Tropheus Kasanga Rainbow is a member of the Tropheus genus, found throughout all regions of Lake Tanganyika.

Exercise caution when choosing tank mates, as the Tropheus Kasanga Rainbow Fish can display aggression at times.

16. Red Phantom Tetra

By Waul

Adult Size:about 1.6 inches (4 centimeters)
Minimum Tank Size:15 gallons for a small school of 5 fish
Water Temperature Range:69 – 77°F (21 – 25°C)
Suitable for beginners:Yes

Contrary to their name, spotting and recognizing Red Phantom Tetras is quite easy, all thanks to their red and orange bodies.

Typically recognized for their peaceful nature, Red Phantom Tetras, belonging to the Hyphessobrycon genus, generally get along well with many other smaller and non-aggressive fish.

17. Pygmy Sunfish

By shinyshiny42

Adult Size:1 inch (2.54 cm), though they usually remain at less than that
Minimum Tank Size:5 gallons
Water Temperature Range:between 68 and 74.3°F (between 20 and 23.5°C)
Suitable for beginners:No, because of strict dietary needs for live foods

On the hunt for a stylish nano fish with neon blue hues that can thrive in your new 5-gallon aquarium? Look no further – the Pygmy Sunfish is the perfect match.

Hailing from the Elassoma genus, the Pygmy Sunfish is admired not only for its vibrant coloration but also for its endearing breeding behavior.

Known for their calm temperament, Pygmy Sunfish make excellent companions when mixed with other peaceful nano fish in your densely planted fish tank. Alternatively, they flourish in a species-only aquarium setup.

18. Banded Rainbowfish

By Burningfyra

Adult Size:about 5 inches (12.5 cm)
Minimum Tank Size:60 gallons for a group of 6 specimens
Water Temperature Range:70.0 to 79.0°F (21.1 to 26.1°C)
Suitable for beginners:Yes

The vibrant colors of the Banded Rainbowfish can vary from red and green to yellow and purple, depending on their geographical origin.

A member of the Melanotaenia genus, the Banded Rainbowfish is just one among over 80 recognized species.

Known for being easy to care for, friendly, and calm, this fish stands out as an excellent option for those seeking a colorful and tranquil addition to their aquarium.

19. Bolivian Ram

By manuallaborsucks

Adult Size:3 inches or 7.6 centimeters
Minimum Tank Size:20 gallons is the absolute minimum and a larger tank is preferred
Water Temperature Range:75 to 83°F (24 to 28°C)
Suitable for beginners:Yes

Commonly referred to as the Bolivian Butterfly Cichlid, the Bolivian Ram is a remarkably stunning fish that continually captivates with its vibrant and varied pigmentation and color patterns.

Hailing from the Mikrogeophagus genus, these spawning fish are indigenous to the Amazon and Orinoco river basins in South America.

In my experience, this fish proves to be an ideal centerpiece species for a non-aggressive community in planted fish tanks.

20. Kribensis Cichlid

By EmperorGestahl

Adult Size:about 3 inches (close to 7.6 cm)
Minimum Tank Size:10 gallons for one fish
Water Temperature Range:the sweet spot is between 78 and 80°F (25 and 26°C)
Suitable for beginners:Yes, in a single-species tank

The African Kribensis Cichlids, belonging to the Pelvicachromis genus, hold a special place as one of my personal favorites due to their remarkable coloration and patterns.

Their rainbow-like appearance and dotted fins add an intriguing touch that I find highly engaging.

While they can exhibit moderate aggression, particularly when not kept with suitable companions, ensuring they share the tank with other passive and peaceful species usually maintains a harmonious environment.

21. German Blue Ram

By Jinxieruthie

Adult Size:3 inches (7.62 cm)
Minimum Tank Size:20 gallon-tank
Water Temperature Range:84 to 86°F (29 to 30°C) as high water temperatures are necessary for this species
Suitable for beginners:Some experience is needed

The German Blue Ram is one of the few cichlids that would fit a medium-sized community tank with tropical temperatures.

Same as the Bolivian Ram, the German Blue Ram is a member of the Mikrogeophagus genus.

They do well with most other fish in their temperature range and have a stunning body coloration.

I would recommend trying them out as a centerpiece species in a tank with smaller, less colorful fish that school together.

22. Scarlet Badis

By kharma_chameleon_

Adult Size:1 inch, but usually remains under 0.8 inches (2 cm)
Minimum Tank Size:10 gallons for 1 male and 4 females
Water Temperature Range:between 68 and 78.8°F (20 to 26°C)
Suitable for beginners:No

The Scarlet Badis, which belongs to the Dario genus, is a small freshwater fish that displays bright neon-blue and red colors.

It is suitable for peaceful community aquariums, full of other tiny fish because other bigger species can make a snack out of the Scarlet Badis.

Keep in mind that the Scarlet Badis prefer mainly live food, and they like a lot of aquatic plants in their fish tank.

23. Glowlight Danio

A Glowlight Danio with colorful body patterns

By Sergev1001

Adult Size:1.1 inches (2.8 cm)
Minimum Tank Size:20 gallons Long and other Long tanks
Water Temperature Range:19 – 24°C (67 – 76°F)
Suitable for beginners:Yes

The Glowlight Danio is an example of a nano fish with luminous colors, such as green, orange, turquoise, and green.

Both the Glowlight Danio and the Celestial Pearl Danio are part of the same Danio genus.

This brightly-colored fish is the schooling type, so it will be most happy in a group of at least 6 other Glowlight Danios.

24. North American Rainbow Darter Fish

By ZTHerper

Adult Size:between 2 and 3.5 inches (up to 9 cm)
Minimum Tank Size:20+ gallons
Water Temperature Range:60 to 68°F or 15 to 20°C (in general, they prefer cooler water)
Suitable for beginners:a certain level of experience required, especially when it comes to the food, as they are known for being picky eaters

Are you looking for a bright-colored and peaceful companion for your new fish tank?

The North American Darter Fish is a suitable option for you, as they get along with other tank mates and will make your aquarium even more vibrant with their neon blue fins and vivid body patterns.

This species is part of the very numerous genus known as Etheostoma.

Interesting fact: The Rainbow Darter fish do not have a swim bladder, and therefore you won’t see them floating here and there around the tank.

25. Pumpkinseed Sunfish

A centerpiece Pumpkinseed Sunfish with beautiful colors
Adult Size:4 inches on average but some reports claim 10 inches or more (10 centimeters on average)
Minimum Tank Size:55+ gallons
Water Temperature Range:between 61 and 71°F (16 to 21.6°C)
Suitable for beginners:No, previous experience with aggressive species is required

The Pumpkinseed Sunfish has some radiant colors – bright yellow, orange, and sometimes even blue or green patterns.

The Pumpkinseed Sunfish is one of the recognized species in the Lepomis genus.

Before you get one, however, don’t underestimate the fact that they can become quite aggressive and dominant, regardless of gender.

Don’t keep them together with other larger and territorial fish.

26. Blood Parrot Cichlid

A Blood Parrot Cichlid that has a bright orange coloration with pink hue to it
Adult Size:up to 8 inches (up to 20 cm)
Minimum Tank Size:30+ gallons for a single fish
Water Temperature Range:between 75 and 82°F (24 to 27.7°C)
Suitable for beginners:Yes, these fish are hardy

Although Blood Parrot Fish are mainly colored in intense orange or pink, sometimes they can come with a different pigment, such as yellow or even grey.

Presented as a man-made hybrid, they come from the Cichlidae family.

Keep them in a fish tank with large species who are equally peaceful, because the smaller ones could turn into prey.

27. Redfin Shiner

A brightly colored Redfin Shiner fish in an aquarium
Adult Size:up to 3.5 inches (8.9 cm)
Minimum Tank Size:55 gallons for a school of 6, or any tank with a length of over 36″
Water Temperature Range:between 57 and 75°F (14 to 24°C)
Suitable for beginners:No

The Redfin Shiners are colorful fish from the genus named Lythrurus, and have bright and rich silver and green bodies, giving a finished vivid look to your aquarium.

Originating from Illinois, USA the Redfin Shiners are schooling fish, and a group of around 6 or 7 will live well among other fish with the same activity and temperament.

28. Roseline Shark

A Roseline Shark fish with contrasting red and black stripes
Adult Size:5 to 6 inches (12.7 to 15.2 cm)
Minimum Tank Size:75+ gallons but go for a 125 gallon one if you can afford it
Water Temperature Range:72 to 77°F (22.2 to 25°C)
Suitable for beginners:Yes

The Roseline Sharks always amaze me with their unique, vivid body colors and the dark stripe that crosses them.

This fish comes from the Sahyadria genus, native to the Sahyadri Mountain in India.

If you want to keep a Roseline Shark, bear in mind that they need to be in groups of at least 5 in order to peacefully inhabit the tank, as this prevents aggression among them and the other fish.

29. Congo Tetra

Two beautifully colored Congo Tetra fish swimming together in a planted aquarium

By satansearthworm

Adult Size:up to 3 inches (7.6 cm)
Minimum Tank Size:30 gallons
Water Temperature Range:between 74 and 80°F (23.3 to 26.6°C)
Suitable for beginners:Yes

Congo Tetras are another representative of the rainbow-colored fish, although they have some showy dominant colors in the orange spectrum.

The Congo Tetras species of the Phenacogrammus genus are also schooling fish.

By keeping them in a group of 6, you will be sure that your aquarium remains a peaceful piece of colorful heaven.

30. Pearl Gourami

A stunning Pearl Gourami in its planted tank

By yackim

Adult Size:4.5 inches (11.5 cm)
Minimum Tank Size:20 gallons
Water Temperature Range:76 to 81°F (24 to 27°C)
Suitable for beginners:Yes, but do provide good water quality for these fish despite them being supposedly hardy

The Pearl Gourami has its name well deserved, as the pearly appearance is the first thing you notice when you look at this magnificent fish.

The Pearl Gourami is from a genus named Trichopodus, the name of which is composed of two Ancient Greek words – “hair” and “foot”.

Pearl Gourami Fish are considered hardy because of their tolerance to low oxygen environments, and as long as you have 2 females for each of the male Pearl Gouramis, you can expect a harmonious atmosphere in the aquarium.

31. Peacock Gudgeon

A super colorful Peacock Gudgeon siwmming in its aquarium

By wodesorel

Adult Size:2.5 to 3 inches (6.3 cm)
Minimum Tank Size:15+ gallons for a single specimen
Water Temperature Range:from 71 to 80.5°F (between 21.6 and 25.6°C)
Suitable for beginners:Yes

Here we come to one of my personal favorites in this colorful list.

The Peacock Gudgeon is an aquarium nano fish that has fantastic yellow, blue, pink, and silver markings all over its body.

This species is in the family Eleotridae the members of which are also known as “Gudgeons”.

These fish are also incredibly friendly and get along with a wide range of other species, especially when you keep them in a school.

32. Marble Betta Fish

A Marble Betta fish with a colorful body pattern

By weebro55

Adult Size:3 inches at most, but usually remains around 2.7 inches
Minimum Tank Size:3 gallons for a juvenile and 5 gallons for a single adult specimen as a bare minimum. See some adequate fish tank options for a Betta fish
Water Temperature Range:75 to 82°F (24 to 28°C)
Suitable for beginners:Yes

The majestically-colored Marble Betta fish will catch your eye the second you look at it.

Depending on the breed, these tropical fish may have 4 to 5 different and bright colors placed all over their bodies, especially on the fins.

The Marble Betta fish belongs to the large and well-known Betta genus.

Moreover, the Marble Betta fish have a gene that makes the fish randomly change its entire body color every couple of months. This makes keeping a Marble Betta ten times as exciting.

Before taking one, though, don’t forget the Betta fish is one of the most territorial fish, so either keep it alone or be very careful when choosing its tank mates.

33. Spotted Rainbowfish

Blue-Eyed Spotted Rainbowfish

By mangroveassassin

Adult Size:1.5 inches (around 3.8 cm)
Minimum Tank Size:15 gallons for a school of 6 specimens
Water Temperature Range:between 72 and 84°F (between 22 and 29°C)
Suitable for beginners:Yes, but it takes some knowledge to breed them successfully

Silverish with some blue marks and pinches of a glowing rainbow, the Spotted Rainbowfish from the Pseudomugil genus will enrich the brightness of your planted aquariums.

On top of that, this tropical fish is one of the most peaceful freshwater creatures you can stumble across, and they get along with almost any other fish.

34. South American Diadema Cichlid

Two vibrantly-colored Diadema Cichlids
Adult Size:about 4.8 inches (about 12 cm)
Minimum Tank Size:40 gallons Long
Water Temperature Range:75.2 to 78.8°F (24 to 26°C)
Suitable for beginners:No, experience with aggressive fish will be needed

Coming from the Aequidens genus, in different color variations, such as yellow, bluish, and reddish, with a dark strap in the middle, the Diadema Cichlid can be a colorful addition to a large community fish tank.

Although Diadema Cichlids stay relatively small in size, these fish can be quite aggressive towards their tankmates, so it’s best for them to be kept with large cichlids or other large predatory fish.

35. Flowerhorn Hybrid Cichlid

A Flowerhorn Cichlid in a fish tank

By xrhonzz007

Adult Size:12 inches on average (30 cm) but up to 16 inches (40 cm) are possible
Minimum Tank Size:75 gallons
Water Temperature Range:82 – 86°F (27.7 – 30°C)
Suitable for beginners:Yes, just don’t forget they need space and keep them singly

Once you see a Flowerhorn Hybrid Cichlid, I guarantee that you won’t forget its distinctive, vivid colors, which may greatly vary from red, to orange and even blue.

The Flowerhorn Hybrid Cichlid belongs to the Cichlidae family, and they, like the blood parrot cichlids, are a hybrid species.

Despite their unique beauty, these tropical fish are aggressive, and the best decision here would be to keep them alone or with other aggressive species in a big enough tank with lots of hiding spots.

36. Discus fish

Multiple colorful Discus Fish

By AliNier23

Adult Size:up to 6 inches (15 cm)
Minimum Tank Size:75 gallons
Water Temperature Range:84 to 87°F (28.8 – 30.5°C)
Suitable for beginners:No, it’s a delicate species that needs stable aquarium parameters

Discus are quite the cool fish, immediately grabbing your attention with their various color patterns and interesting body shape.

A favorite among connoisseurs, this fish is from the genus known as Symphysodon.

Discus fish are most happy when they live in a group where the females will be slightly more than the males.

Also, suitable tank mates are fish with the same high water temperature tolerance.

37. Clown Killifish – Epiplatys annulatus

A pair of cute Clown Killifish swimming beneath the water’s surface in a planted tank

By gabibakos

Adult Size:1.4 in (3.6 cm)
Minimum Tank Size:5 gallons
Water Temperature Range:67 to 80°F (19.4 to 26.6°C)
Suitable for beginners:Yes

This is one of the best fish to stock your 10-gallon aquarium with!

Tiny as they might be, clown killifish (Epiplatys annulatus) will rarely go unnoticed in an aquarium.

These cold water nano fish have a yellow body that’s covered in black stripes and boast a gorgeous multicolored tail.

To top it all off, they have striking azure eyes that neatly blend with the markings on their tail.

Even though their beauty isn’t fleeting, their stay in your aquarium might be if you don’t keep them under a tight lid.

38. True Freshwater Bumblebee Goby – Brachygobius xanthomelas

A True Freshwater Bumblebee Goby resting on a green leaf in a planted aquarium

By JamesWoodsAllDay

Adult Size:1.2 inches, but they usually stay under an inch (2.5 to 3 cm)
Minimum Tank Size:10 gallons
Water Temperature Range:71.6 to 82°F (22 to 28°C)
Suitable for beginners:No

The True Freshwater Bumblebee Goby from the Brachygobius genus is well deserving of its name.

This miniscule rascal won’t miss an opportunity to “sting” or rather nip at the fins of goldfish, tetras or other long-finned species.

Moreover, they have a bi-colored, blue and yellow body which is highly reminiscent of their terrestrial namesake.

Fortunately, you can mitigate the aggressive tendencies of bumblebee gobies by keeping them in a school or dare I say, hive, of at least six fish.

39. Electric Blue Jack Dempsey – Rocio octofasciata

An Electric Blue Jack Dempsey swimming over a rock with some driftwood in the background

By zer0signal

Adult Size:10 inches (25.4 cm)
Minimum Tank Size:At least 55 gallons for one fish
Water Temperature Range:74 to 81°F (23 to 28°C)
Suitable for beginners:A certain amount of experience and knowledge is required since these fish can get highly territorial

Electric Blue Jack Dempseys can certainly pack a punch when they’re kept with smaller tank mates.

But unlike the late boxer of the same name, you’ll see their punches coming from miles away.

That’s because the body color of these cichlids darkens when they get aggressive.

As entertaining as this might be, it’s best to keep Jack Dempseys in a single species tank where they won’t harass other fish. Contrary to their occasional violent tendencies, Jack Dempseys are actually one of the most compassionate fish in the hobby. Not only do they not eat their fry, but they also pre-chew food for their babies.

Colorful Fishes Are Best For You

Delight in the vivid hues of a Betta fish, with its flowing fins boasting a palette that rivals a painter’s canvas. The Electric Blue Acara, with its striking blue and metallic sheen, adds a touch of elegance to any aquarium.

Don’t forget the playful and energetic nature of the Gourami, which comes in a variety of shades, or the exotic appeal of the Discus fish, showcasing a symphony of colors reminiscent of a tropical sunset.

The dazzling stripes of the Rainbowfish and the intricate patterns of the German Blue Ram are sure to captivate the attention of any aquarium enthusiast.

These colorful freshwater fishes not only bring visual appeal to your tank but also contribute to the dynamic balance of your aquatic ecosystem.

As they gracefully navigate their aquatic environment, these fishes create a living kaleidoscope, turning your aquarium into a mesmerizing and vibrant aquatic display.

How to make your Pet Fish even more Colorful?

You might believe that adding a couple of vibrant fish to your tank is sufficient to maximize its color potential. However, what if I told you there’s a way to make your aquarium even more colorful?

Achieving this is simple by ensuring proper care for your pet fish, particularly by promoting a healthy diet.

All it takes is feeding them high-quality freeze-dried or live foods, and you’ll witness their colors transform from bright to truly fascinating in just a few days. Not only will this enhance their appearance, but it will also contribute to their overall health and happiness.

However, exercise caution when selecting live food sources, as those from untrusted vendors may carry parasites and bacteria. To play it safe, opt for freeze-dried foods, which are sterilized, ensuring they are free from bacteria and parasites.

The key advantage of freeze-dried foods lies in their ability to retain their nutritional qualities even after sterilization. Consider the positive impact a day of feeding high-quality bloodworms can have on enhancing the vibrancy of your fish’s colors.

Before and after color enhancement in Betta Fish

Starting with Freshwater Aquarium Fish

I understand the excitement of setting up a new aquarium and the eagerness to make it happen quickly. However, there are essential steps to follow before introducing live fish to the tank.

A crucial aspect of preparing a freshwater aquarium for inhabitants is the “cycling” process. Without it, new fish may perish one by one, which is something we definitely want to avoid.

During the cycling process, beneficial bacteria establish themselves in the tank. These bacteria play a crucial role in eliminating toxic components such as ammonia and nitrite, creating a safe and healthy environment for ornamental fish.

Typically, it takes about 8 to 10 weeks to fully cycle a new aquarium naturally. If you’re looking to expedite the process, there’s a fantastic solution: you can introduce live bacteria supplements to kickstart the aquarium. For more information on aquarium bacteria starters and how to use them, you can visit the provided link.

Utilizing these products can expedite the cycling of your fish tank to a mere 2 weeks, getting it ready for the vibrant presence of your pet fish. Which fish from the aforementioned list caught your eye the most? Feel free to leave a comment below, sharing your favorite freshwater aquarium fish with captivating colors.

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