Did you know there are more than 100 types of tetras? You’ve read that right!
Tetras are some of the most popular freshwater aquarium fishes out there. Everyone has heard of friendly and strikingly beautiful neon tetras! But were you aware of just how many tetra cousins this fish has?
While all of these fish belong to the Characidae family, at first glance it might seem like they don’t have many things in common. However, the more you meet those beauties, the more you’ll see just how gorgeous each and every one of these tiny fish is.
Without further ado, here are 41 types of tetras you absolutely have to know about:
1. Lemon Tetra
Lemon tetra is the fish for you if you’d like to add a bit of yellow to your tank. While their base color is silver, the vibrant splashes of yellow will truly capture everyone’s attention.
The bright red eye these fish usually have, as well as the dark tips of fins, are a perfect contrast, giving these fish the amazingly good looks they are known for.
Next to being cute, these fishies are truly resilient. They can withstand many water parameters and don’t require lots of care. If you’re a beginner, you won’t go wrong with them. Just make sure to keep them in large groups!
| Scientific Name: | Hyphessobrycon pulchripinnis |
| Size: | 1.5 inches |
| Diet: | Omnivore |
| Temperament: | Active and peaceful |
| Tank Size: | 20 gallons |
| Water Temperature: | 72°F – 82°F |
| Water Hardness: | 3 – 20 dGH |
| pH Value: | 5.5 – 8.0 |
| Care Difficulty: | Easy |
2. Black Phantom Tetra
Black phantom tetras are among the most uniquely looking tetras you can find. Their bodies are dark gray with black fins, but the dorsal fin is elongated, giving the fish the ghost-like appearance.
Black phantom tetras might be a bit harder to care for compared to most other tetras. They are quite sensitive to improper parameters and sudden changes, so make sure to monitor their living conditions closely.
Also, while mostly peaceful, male black phantom tetras might be slightly territorial, especially during the breeding season.
| Scientific Name: | Hyphessobrycon megalopterus |
| Size: | 1.75 inches |
| Diet: | Omnivore |
| Temperament: | Mostly peaceful |
| Tank Size: | 10 gallons |
| Water Temperature: | 71°F – 80°F |
| Water Hardness: | 3 – 18dGH |
| pH Value: | 6.0 – 7.5 |
| Care Difficulty: | Difficult |
3. Neon Tetra
Neon tetras are probably the most popular type of tetra – and for a good reason. These fish have an appearance that cannot be missed, with a bright blue stripe and a splash of red.
Despite common beliefs, neon tetras are not the most peaceful fish out there. While you cannot consider them aggressive in the slightest, they can be territorial, especially towards larger fish.
| Scientific Name: | Paracheirodon innesi |
| Size: | 1.5 inches |
| Diet: | Omnivores |
| Temperament: | Mostly peaceful |
| Tank Size: | 10 gallons |
| Water Temperature: | 68°F – 82°F |
| Water Hardness: | 5 – 15 dGH |
| pH Value: | 4 – 7.5 |
| Care Difficulty: | Easy |
4. Rosy Tetra
This fish is easily recognized by its salmon to bright pink body with red fins and a black marking on its elongated dorsal fin. If kept in hard water, its color might become duller, so be wary of the parameters you’re keeping it in.
While rosy tetras are mostly peaceful, they can become mildly aggressive if kept in small groups or too-tiny tanks. On such occasions, they might start fin nipping, so you might avoid keeping them with long-finned or slow-swimming fish, such as guppies.
| Scientific Name: | Hyphessobrycon rosaceus |
| Size: | 1.5 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful to mildly aggressive |
| Tank Size: | 20 gallons |
| Water Temperature: | 75°F – 82°F |
| Water Hardness: | 5 – 20 dKH |
| pH Value: | 5.5 – 7.5 pH |
| Care Difficulty: | Easy |
5. Black Tetra
Also known as black skirt tetras or black widow tetras, they are one of the most popular freshwater fish out there. In fact, their popularity might match the one neon tetras have!
These are some of the largest fish from the tetra family, as they can reach up to 3 inches in length with proper care. However, most mines have grown around 2 – 2.5 inches in size.
Just like most tetras, black tetras prefer slightly acidic water over alkaline. Make sure you know how to lower the pH in aquariums before you start caring for them.
| Scientific Name: | Gymnocorymbus ternetzi |
| Size: | 2 – 3 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 15 gallons |
| Water Temperature: | 70°F – 82°F |
| Water Hardness: | 4 – 18 dGH |
| pH Value: | 6.0 – 7.5 |
| Care Difficulty: | Easy |
6. Cardinal Tetra
Cardinal tetra is a popular fish that is often confused with neon tetras. It’s easy to see why. These fish are also known for their neon blue stripe and red markings.
The biggest difference, however, is that the red color covers almost the entire bottom half of the tetra’s body and it often bleeds into the caudal fin.
This is a shoaling fish that prefers to stay in larger groups. You shouldn’t keep less than four fish in a single tank. Otherwise, they’ll get stressed, which can ruin their health in the long run.
| Scientific Name: | Paracheirodon axelrodi |
| Size: | 2 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 15 gallons |
| Water Temperature: | 73°F – 81°F |
| Water Hardness: | 2 – 8 dGH |
| pH Value: | 5.0 to 7.5 |
| Care Difficulty: | Easy to moderate |
7. Loreto Tetra
While Loreto tetras aren’t the most colorful fish when compared to neon tetras, they are nonetheless gorgeous. They have a silver body with a thin, golden stripe and a thicker, black stripe underneath it, and splashes of white and red on their transparent fins.
This is one of the smaller tetras, reaching a length of 1.25 inches. However, they require a large tank as they should live in large communities with at least eight fish from the same species.
Unlike many other easy-going tetras from this list, Loreto tetras are sensitive to improper water conditions. Forget about instant 24-hour cycles when you have them – the slightest ammonia levels might kill them.
This can make them somewhat challenging for beginners.
| Scientific Name: | Hyphessobrycon loretoensis |
| Size: | 1.25 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 15 gallons |
| Water Temperature: | 72°F – 80°F |
| Water Hardness: | 5 – 15 dGH |
| pH Value: | 5.5 – 7.0 |
| Care Difficulty: | Moderate |
8. Green Neon Tetra
Green neon tetras look just like duller, greener neon tetras. Because of this, they are often sold under the wrong name. However, you can identify them by the green tint on their body and faint, sometimes non-existent red stripes.
These are some of the smallest types of tetras out there, and they usually stay shorter than an inch. Also, they have some specific care requirements that might make them a bit challenging to keep, at least without a proper water testing kit.
For example, they require slightly acidic and very soft water. It is said they can survive in water with a pH level of just 3! However, I would not risk and test that. I keep them in pH 6 and they seem to be doing just fine.
| Scientific Name: | Paracheirodon simulans |
| Size: | 1 inch |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 15 gallons |
| Water Temperature: | 75°F – 85°F |
| Water Hardness: | 1 – 8 dGH |
| pH Value: | 5.0 – 6.5 |
| Care Difficulty: | Easy to moderate |
9. Cochu’s Blue Tetra
Also known simply as blue tetra, Cochu’s tetra isn’t as colorful as many other types of tetras. This doesn’t mean it’s any less beautiful.
Its body comes in blue to purple shades with iridescent shine. They have a darker stripe along their lateral line, but this stripe is technically still the same color as the rest of their body.
Just like most tetras, this is a shoaling fish that should be kept in large groups. While generally peaceful, they can become destructive if kept in small tanks or if they become too stressed.
As such, it might be the smart choice not to keep them with long-finned fish that might irritate them.
| Scientific Name: | Boehlkea fredcochui |
| Size: | 1.5 – 2.5 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful to mildly aggressive |
| Tank Size: | 15 gallons |
| Water Temperature: | 72°F – 82°F |
| Water Hardness: | 5 – 12 dGH |
| pH Value: | 5.5 – 7.6 |
| Care Difficulty: | Easy |
10. Ember Tetra
Ember tetras are gorgeous little fish that, as their name suggests, come in bright orange, ember-like color. What adds to their appearance is that they’re semi-transparent, making them look like they’re glowing.
These tiny fish have a huge personality, and they are among the most playful fish you’ll encounter. They are very peaceful and love to swim in large schools, making them a joy to look at.
As they are somewhat skittish, make sure to provide them with lots of hiding spots. Plants that grow on rocks can be an interesting choice, as this will give your tank a unique appearance while ensuring your fish have lots of places to hide.
| Scientific Name: | Hyphessobrycon amandae |
| Size: | 1 inch |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 10 gallons |
| Water Temperature: | 73°F – 84°F |
| Water Hardness: | 5 – 17dGH |
| pH Value: | 5.0 – 6.5 |
| Care Difficulty: | Easy |
11. Bucktooth Tetra
There is a saying that each family has a black sheep, and we have reached that one.
While bucktooth tetra looks just like – well, a tetra – its temperament might surprise you. This is a rather aggressive fish, something that’s not really tetra-like.
In fact, this silver, semi-transparent tetra is such a bully that it might match your crowntail betta. You shouldn’t keep them in a community tank, unless in a species-only aquarium.
Just like black tetra, this fish is one of the largest on the list. It can reach an amazing 5 inches in length! For tiny tetras, this fish is a true giant.
Another feature that sets them apart from most tetras is their diet. Bucktooth tetra is a predatory fish. In nature, it mostly feeds on smaller fish, insects, but also fish scales.
| Scientific Name: | Exodon paradoxus |
| Size: | 5 inches |
| Diet: | Carnivore |
| Temperament: | Aggressive |
| Tank Size: | 50 gallons |
| Water Temperature: | 72°F – 82°F |
| Water Hardness: | 0 – 20 dGH |
| pH Value: | 5.5 – 7.5 |
| Care Difficulty: | Moderate |
12. X-Ray Tetra
Just after first glance, it’s easy to see how the X-ray tetra got its name. These translucent fishies look like something from anatomy classes!
Also known as Pristella tetras, X-ray tetras still have a few splashes of color. Their fins have black, yellow, and white splashes, while their caudal fin has a soft pink tint.
At the same time, this is one of the very few tetras that have a Weberian apparatus. This is a chain of small bones that connect the inner ear and swim bladder, enhancing the fish’s hearing abilities.
The best part of X-ray tetras is that this is a hardy and adaptable fish that can withhold most water parameters. Not just that, but it isn’t too sensitive to changes in water parameters. A true beginner-friendly fish!
| Scientific Name: | Pristella maxillaris |
| Size: | 1.75 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 10 gallons |
| Water Temperature: | 72°F – 82°F |
| Water Hardness: | 4 – 18 dGH |
| pH Value: | 6.0 – 8.0 |
| Care Difficulty: | Easy |
13. Rummy Nose Tetra
Rummy nose tetra is one of the cutest types of tetras out there. These little semi-transparent fish have a silvery body with red noses and faces, and black and white stripes on caudal fins.
They are a bit more sensitive to changes in water parameters, so they are not the best choice for first-time owners.
Also, these are one of the few tetras that can commonly be found in albino variety, so be on the lookout for them, as well.
| Scientific Name: | Hemigrammus rhodostomus |
| Size: | 2.5 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 20 gallons |
| Water Temperature: | 75°F – 84°F |
| Water Hardness: | 5 – 20 dGH |
| pH Value: | 5.5 – 6.5 |
| Care Difficulty: | Moderate |
14. Serpae Tetra
Serpae tetras, also known as Callistus tetras or jewel tetras, are known for their gorgeous orange-to-red scales with a black, comma-like spot next to the gills.
Keep in mind that their color fades with age, but also with sickness. However, if you’ve had your tetra for a while, there is no need to panic immediately when you notice the color has changed. Look for other signs of illnesses, such as lethargy.
Also, these tetras prefer slightly cooler water compared to many others from the list, so this is something to keep in mind, as well.
| Scientific Name: | Hyphessobrycon eques |
| Size: | 2 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 20 gallons |
| Water Temperature: | 72°F – 79°F |
| Water Hardness: | 5 – 25 dGH |
| pH Value: | 5 – 7.8 |
| Care Difficulty: | Easy |
15. Congo Tetra
Congo tetras owe their name to their color pattern and the area of origin. You’ve guessed it – they come in red, yellow, and green, and they come from the Congo River in Africa.
This is a larger tetra that easily reaches 3.5 inches in length. As such, it requires a bit larger tank than most other tetras do.
These are relaxed fish that can do well in most water conditions. Just be careful with choosing the proper tank mates! These fish are known for their fin-nipping habits.
| Scientific Name: | Phenacogrammus interruptus |
| Size: | 3.5 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful to mildly aggressive |
| Tank Size: | 30 gallons |
| Water Temperature: | 73°F – 82°F |
| Water Hardness: | 3 – 18 dGH |
| pH Value: | 6.0 – 7.5 |
| Care Difficulty: | Easy to moderate |
16. Bleeding Heart Tetra
Bleeding heart tetras are fishies that might look dull at a first glance. However, what makes them stand out is a small, red spot on their body near their gills. As you’ve guessed it – this is how these fish got their name. Although, no, this isn’t where their heart is.
These fish don’t like to be alone and prefer to be kept in fairly large schools. If you don’t give them proper company, they might start fin-nipping other fish. To make matters worse, they might even become sick or die!
| Scientific Name: | Hyphessobrycon erythrostigma |
| Size: | 2 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 15 gallons |
| Water Temperature: | 72°F – 80°F |
| Water Hardness: | 4 – 8 dGH |
| pH Value: | 6.0 – 7.0 |
| Care Difficulty: | Easy |
17. Emperor Tetra
Emperor tetras might not seem as the most colorful fish at first. However, under proper light conditions, their true beauty shines through – literally! These tetras have gorgeous golden, blue, purple, and green sheen to them, making them look as royal as you’d imagine.
Emperor tetras are known for their sexual dimorphism, something not usual for tetras. It’s quite easy to tell between genders due to the shape of dorsal and caudal fins.
Not just that, but there are some indications that the type and color of the light you use for your tank will greatly impact the sex ratio among the emperor tetra offspring!
| Scientific Name: | Nematobrycon palmeri |
| Size: | 2 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 10 gallons |
| Water Temperature: | 73°F – 81°F |
| Water Hardness: | 5 – 25 dGH |
| pH Value: | 5.0 – 7.8 |
| Care Difficulty: | Moderate to difficult |
18. Diamond Tetra
Diamond tetras might look like a tiger barb that has lost its stripes – especially in their juvenile state when they’re not as colorful and shiny. However, the two are not closely related, as a tiger barb belongs to an entirely different fish family.
This is a friendly fish that will thrive in community tanks. It isn’t likely to exhibit any fin-nipping behaviors, so you can calmly keep them with guppies, goldfish, and other long-finned fish that would be endangered by territorial fish.
Just keep in mind to keep them in groups of at least 8!
| Scientific Name: | Moenkhausia pittieri |
| Size: | 2 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 20 gallons |
| Water Temperature: | 72°F – 82°F |
| Water Hardness: | 2 – 15 dGH |
| pH Value: | 5.5 – 7.0 |
| Care Difficulty: | Moderate to difficult |
19. Flame Tetra
Flame tetras are rather unique-looking tetras that are easily recognized by their yellow, orange, and red hues on semi-transparent bodies.
Also known as Von Rio Tetras, these fish love slow-moving waters and a well-planted tank. Unfortunately, this means combining them with vampire shrimp is a huge no-no, as the two live in entirely different environments.
These are small tetras that live in medium-sized schools, so a 10-gallon tank should be sufficient for all their swimming needs.
| Scientific Name: | Hyphessobrycon flammeus |
| Size: | 1.5 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 10 gallons |
| Water Temperature: | 72°F – 82°F |
| Water Hardness: | 5 – 20 dGH |
| pH Value: | 5.8 – 7.8 |
| Care Difficulty: | Easy |
20. Buenos Aires Tetra
If you’ve never heard of this type of tetra before, don’t worry. You’re not the only one. The reason why this fish isn’t popular is due to its bad behavior. Surprisingly for a tetra, Buenos Aires tetra isn’t the friendliest of fish you can find.
This fish species has a silver body with a bluish or greenish sheen, as well as orange caudal and anal fins and a black spot at the base of the tail.
Also, Buenos Aires tetras don’t like warm water. Quite the opposite – if the water gets too hot, they can easily become sick or even die.
| Scientific Name: | Hyphessobrycon anisitsi |
| Size: | 2.75 inches |
| Diet: | Omnivore |
| Temperament: | Semi-aggressive |
| Tank Size: | 30 gallons |
| Water Temperature: | 64°F – 77°F |
| Water Hardness: | 1 – 20 dGH |
| pH Value: | 5.5 – 8.5 |
| Care Difficulty: | Easy |
21. Head-and-tail Light Tetra
Also known as the beacon fish, head-and-tail light tetra is a peaceful type of tetra that is one of the best beginner fish you can find.
While dull-looking at a first glance, the reflective spots on their head and tail give them a truly unique appearance. They often have some black spots, as well.
These tetras don’t require a large tank. However, they do need lots of open space, so don’t overcrowd their aquarium. Fast-growing aquarium plants might not be a good choice, as they can get out of control quickly, ruining this fish’s quality of life.
| Scientific Name: | Hemigrammus ocellifer |
| Size: | 2 inches |
| Diet: | Omnivores |
| Temperament: | Peaceful |
| Tank Size: | 15 gallons |
| Water Temperature: | 75°F – 82°F |
| Water Hardness: | 5 – 20 dGH |
| pH Value: | 5.5 – 7.5 |
| Care Difficulty: | Easy |
22. GloFish® Tetra
You’ve probably seen all those fluorescent fish sold in stores. These are genetically-modified fish owned by Spectrum Brands, known under the umbrella term GloFish. One of these glowy fishies is a GloFish tetra.
GloFish tetra is, actually, a black tetra with unique glow-in-the-dark characteristics. They come in trademarked colors such as Galactic Purple, Starfire Red, Sunburst Orange, Electric Green, and Moonrise Pink.
Keep in mind that there are many legal issues regarding breeding or selling GloFish. While you likely won’t have many issues buying them, their distribution is closely monitored.
| Scientific Name: | Gymnocorymbus ternetzi |
| Size: | 2 – 3 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 15 gallons |
| Water Temperature: | 70°F – 82°F |
| Water Hardness: | 4 – 18 dGH |
| pH Value: | 6.0 – 7.5 |
| Care Difficulty: | Easy |
23. Vampire Tetra
Now this is a tetra you aren’t likely to find in a common tank, but I just couldn’t not include it in this list. Everything about this fish is so unusual, you likely would never guess it belongs to the tetra family!
Vampire tetra is a huge, carnivorous tetra that might sometimes be kept in aquariums while in a juvenile state – although it is far from good-looking. If you ask me, it looks more like a piranha than a standard tetra!
While this fish is considered peaceful since it’s not territorial or dominant, it will eat any fish or crustacean it can fit into its mouth. Combine this with its fast growth rate – I would not recommend keeping it inside a tank, especially if you’re a beginner.
| Scientific Name: | Hydrolycus scomberoides |
| Size: | 4 feet |
| Diet: | Carnivore |
| Temperament: | Semi-aggressive |
| Tank Size: | 500 gallons |
| Water Temperature: | 75°F – 82°F |
| Water Hardness: | 2 – 25 dGH |
| pH Value: | 6.0 – 8.0 |
| Care Difficulty: | Difficult |
24. Ruby Tetra
Ruby tetra is a tiny tetra that, as its name suggests, has a semi-transparent, red body. While its maximum size is around 1.5 inches, most of these fish don’t grow larger than an inch.
Due to its small size, this peaceful fish will easily fall prey to other, larger fish, such as kribensis cichlid or red tail sharks.
Because of this, I would suggest keeping them in species-only tanks, or in a community with dwarf shrimp and snails. You can even fit a few of these fish into a small 5-gallon tank!
| Scientific Name: | Axelrodia riesei |
| Size: | 1.5 inch |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 5 gallons |
| Water Temperature: | 75°F – 80°F |
| Water Hardness: | 5-15 dGH |
| pH Value: | 4.5 – 6.5 |
| Care Difficulty: | Easy to moderate |
25. Penguin Tetra
This is one of the few fish that doesn’t look the way you might’ve imagined it. While it’s true that a penguin tetra looks nothing like a penguin, it still comes in somewhat penguin-like colors, with a silver body and a black stripe spreading to the bottom of the tail.
In fact, the reason why this tetra got its name is that it likes to swim in an unusual vertical pattern – more similar to a penguin than a tetra!
This is a hardy tetra that won’t mind most water conditions. Just remember to keep it in groups, so it doesn’t become stressed out.
| Scientific Name: | Thayeria boehlkei |
| Size: | 3 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 25 gallons |
| Water Temperature: | 72°F – 82°F |
| Water Hardness: | 5-20 dGH |
| pH Value: | 6.0 – 8.0 |
| Care Difficulty: | Easy |
26. Rainbow Tetra
Rainbow tetras are one of the most beautiful tetra species. Their silvery-golden scales produce all the colors of the rainbow, such as red, pink, blue, purple, and green.
This is also one of the rarer tetras, so expect it to be a bit on the expensive side.
Surprisingly, this is a territorial fish prone to fin-nipping. Choose its tankmates wisely to avoid this behavior from happening.
| Scientific Name: | Nematobrycon lacortei |
| Size: | 2 inches |
| Diet: | Omnivore |
| Temperament: | Semi-aggressive |
| Tank Size: | 10 gallons |
| Water Temperature: | 72°F – 80°F |
| Water Hardness: | 2 – 10 dGH |
| pH Value: | 6.0 to 7.2 |
| Care Difficulty: | Moderate |
27. Glowlight Tetra
Don’t confuse the glowlight tetra with a GloFish one! Despite the similarities in the name, these two are nothing alike. Glowlight tetras have transparent bodies with a bright orange stripe spreading from their head to the tail, making them look… well, like a glowlight.
These are shy and peaceful fishies that, sadly, might easily fall victim to the larger fish due to their sparkly appearance. This is especially true with angelfish, that would gladly munch on a much smaller glowlight.
Also, these fish love to stick to themselves. They prefer living in a species-only tank, and you’ll rarely see them swimming with any other fish.
| Scientific Name: | Hemigrammus erythrozonus |
| Size: | 1.5 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 10 gallons |
| Water Temperature: | 74°F – 82°F |
| Water Hardness: | 2 – 15 dGH |
| pH Value: | 5.8 – 7.5 |
| Care Difficulty: | Easy |
28. Black Neon Tetra
Black neon tetra is a beginner-friendly fish that isn’t as common as a standard neon tetra – but it’s just as easy-going.
They even look very similar to neon tetras, but instead of red, they have a black stripe underneath the neon blue one. Also, their entire body seems to have a slightly more golden coloration.
This is another type of tetra that might sometimes be available in albino variety, although this is quite rare.
| Scientific Name: | Hyphessobrycon herbertaxelrodi |
| Size: | 1.5 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 15 gallons |
| Water Temperature: | 72°F – 80°F |
| Water Hardness: | 5 – 20 dGH |
| pH Value: | 5.0 – 7.5 |
| Care Difficulty: | Easy |
29. Redeye Tetra
Redeye tetra is one of the more basic-looking tetras, but they are still very popular due to how easy they are to care for. They originate from murky South American waters, making them rather resilient to water changes.
As their name suggests, these fish have silver bodies with bright, red eyes. Also, they have a black caudal fin with a bit of white on them. Truly, their appearance can hardly make them stand out.
| Scientific Name: | Moenkhausia sanctaefilomenae |
| Size: | 3 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 20 gallons |
| Water Temperature: | 73°F – 82°F |
| Water Hardness: | 5 – 25 dGH |
| pH Value: | 5.5 – 8.5 |
| Care Difficulty: | Easy |
30. Colombian Tetra
The Colombian tetra, as its name suggests, originates from the Acandi River in northwestern Colombia. Similarly to many other tetras, this fish has an iridescent, silver body. However, its fins are orange or red in color, giving it a striking appearance.
Unfortunately, this isn’t a tetra you can easily keep with most tankmates. Quite the opposite – it is somewhat of a bully. It is known for attacking smaller fish, especially if kept in a group that is too small.
| Scientific Name: | Hyphessobrycon columbianus |
| Size: | 3 inches |
| Diet: | Omnivore |
| Temperament: | Semi-aggressive |
| Tank Size: | 15 gallons |
| Water Temperature: | 75°F – 81°F |
| Water Hardness: | 5 – 18 dGH |
| pH Value: | 5.5 – 7.0 |
| Care Difficulty: | Easy |
31. Silvertip Tetra
Silvertip tetra is one of the smallest tetras out there. This doesn’t make it any less beautiful.
It has a brown to yellowish body, with red fins, yellow spots, and a black stripe on the base of the tail, and, as its name suggests, silver fin tips.
While tiny, this fish requires a somewhat large tank as it prefers to live in huge schools. Also, this is a great companion fish for your blue jelly shrimp, as the two live in similar conditions and will complement each other’s colors very beautifully.
| Scientific Name: | Hasemania nana |
| Size: | 1 inch |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 20 gallons |
| Water Temperature: | 72°F – 82°F |
| Water Hardness: | 2 – 20 dGH |
| pH Value: | 6.0 – 8.0 |
| Care Difficulty: | Easy |
32. Dawn Tetra
Also known as the panda tetra, dawn tetras are yet another fairly rare tetra species. Their bodies have a beautiful golden to green sheen, with black and white spots on the base of the tail and anal fins.
While omnivorous, dawn tetra seems to prefer animal-based meals. In fact, it will love it if you give it live food from time to time!
Also, this fish is fairly aggressive for a tetra. It isn’t uncommon for dawns to attack even much larger tank mates.
| Scientific Name: | Aphyocharax paraguayensis |
| Size: | 1.3 inches |
| Diet: | Omnivore |
| Temperament: | Semi-aggressive |
| Tank Size: | 15 gallons |
| Water Temperature: | 75°F – 82°F |
| Water Hardness: | 5 – 15 dGH |
| pH Value: | 5.5 – 7.5 |
| Care Difficulty: | Moderate |
33. Belgian Flag Tetra
It’s easy to see how this fish got its name. It has a dark body with a red, yellow, and black stripe across its lateral line! It truly looks as if someone drew a horizontal belgian flag over it.
Also known as the tricolor flag tetra or simply flag tetra, this is a somewhat rare shoaling fish that loves to live in large groups.
While Belgian flag tetras are fairly easy to breed in captivity, make sure you do this in a 40-gallon breeding tank. They are not known as the best parents, so keep the fry separated from adult fish.
| Scientific Name: | Hyphessobrycon heterorhabdus |
| Size: | 1.5 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 15 gallons |
| Water Temperature: | 72°F – 82°F |
| Water Hardness: | 5 – 15 dGH |
| pH Value: | 5.5 – 7.0 |
| Care Difficulty: | Moderate |
34. Mexican Tetra
While far from being the most beautiful fish on the list, there are many things that make Mexican tetra stand out from the rest.
It is known as the blind cave tetra, and just by this, you might’ve guessed a few characteristics about it. Yes, Mexican tetras live in caves, and most of them are entirely blind. Those that aren’t have poorly developed eyes, the others lack them completely.
Due to their unique way of life, these fish have a few peculiar needs. Not only do they not need sunlight, but they don’t care about light at all! Also, they prefer cooler water than most other tetra species.
| Scientific Name: | Astyanax mexicanus |
| Size: | 4 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 25 gallons |
| Water Temperature: | 68°F – 77°F |
| Water Hardness: | 5 – 30 dGH |
| pH Value: | 6.0 – 7.5 |
| Care Difficulty: | Moderate |
35. Crystal Tetra
While many tetras are somewhat translucent, this particular one is almost fully transparent, except for some black dots.
This is a skittish fish that prefers to be kept in groups of 8 or more. This can reduce stress levels and ensure they live long, healthy lives. Be mindful of tankmates, as other fish that occupy the same space might bully crystal tetra.
Keep in mind that many of these fishies are wild caught. If you want to keep your fishkeeping hobby ethical, make sure to double-check the breeder.
| Scientific Name: | Protochelrodon pl. |
| Size: | 2.5 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 30 gallons |
| Water Temperature: | 70°F – 82°F |
| Water Hardness: | 5 – 15 dGH |
| pH Value: | 5.0 – 8.0 |
| Care Difficulty: | Moderate |
36. Bloodfin Tetra
Bloodfin tetras are semi-translucent silver fishies with bright to dark red fins – hence their name. As they live in large schools, their unique coloring truly captures everyone’s eyes.
These are rather hardy fish that can live in most conditions. They can even tolerate colder water temperatures!
However, keeping them in optimal conditions will make their colors more vibrant. If you want them to truly shine, this is something you should keep in mind.
Also, they are known for jumping out of a tank.
| Scientific Name: | Aphyocharax anisitsi |
| Size: | 2 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 20 gallons |
| Water Temperature: | 70°F – 80°F |
| Water Hardness: | 5 – 15 dGH |
| pH Value: | 6.0 – 8.0 |
| Care Difficulty: | Easy |
37. White Skirt Tetra
If these fish look familiar, it’s because I’ve already listed two varieties of the same fish species. Yes, this is just a morph of black skirt tetra I’ve already talked about.
Don’t confuse white skirt tetras with albino fish. While albino tetras have red eyes and a pinkish tint, white skirts are more salmon in shade, sometimes even yellow.
| Scientific Name: | Gymnocorymbus ternetzi |
| Size: | 2 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 10 gallons |
| Water Temperature: | 70°F – 80°F |
| Water Hardness: | 5 – 20 dGH |
| pH Value: | 6.0 – 8.0 |
| Care Difficulty: | Easy |
38. Gold Tetra
Gold tetras actually have silver scales, but they have a golden shine that they’re named for.
These are shy and skittish fish that shouldn’t be kept with much larger fish, as this can stress them out.
These fish are picky about water conditions, and they are very sensitive to parameter changes. Considering they’re also fairly expensive, it’s easy to see why they’re not considered good beginner fish.
| Scientific Name: | Hemigrammus rodwayi |
| Size: | 2.5 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 15 gallons |
| Water Temperature: | 70°F – 80°F |
| Water Hardness: | 1 – 12 dGH |
| pH Value: | 5.5 – 7.0 |
| Care Difficulty: | Difficult |
39. Black Morpho Tetra
Sometimes called the black darter tetra or Weitzman tetra, black morpho isn’t the most popular tetra type. However, it is beautiful nonetheless.
This fish looks similar to the Belgian flag tetra, except for its huge dorsal and anal fins. Not only do these fins look majestic, but they also have a white stripe, a streak of red, and tiny black spots.
Truly a remarkable animal!
| Scientific Name: | Poecilocharax weitzmani |
| Size: | 1.75 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 15 gallons |
| Water Temperature: | 72°F – 82°F |
| Water Hardness: | 5 – 20 dGH |
| pH Value: | 5.0 – 6.5 |
| Care Difficulty: | Moderate |
40. Candy Cane Tetra
If you’ve seen that weird label that states HY511, don’t panic. This isn’t some newly discovered alien fish, but rather another name for a candy cane tetra.
Candy cane tetra is often confused with the rosy tetra, but it has a brighter, more pink color that is more transparent, and it lacks the black marking on the dorsal fin.
While this is a very peaceful fish, it still might eat much smaller animals. This, sadly, includes crustaceans, such as your beloved cherry shrimp.
| Scientific Name: | Hyphessobrycon bentosi |
| Size: | 2 inches |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 20 gallons |
| Water Temperature: | 72°F – 82°F |
| Water Hardness: | 3 – 12 dGH |
| pH Value: | 5.5 – 7.5 |
| Care Difficulty: | Moderate |
41. Toucan Tetra
Toucan tetra is yet another tetra perfectly suited for a nano tank. It usually grows no longer than 0.8 inches, making them easy prey for larger fish.
These tiny fish truly resemble toucans, with their large eyes and colorful bodies – with black, yellow, and red being the dominant shades.
Toucan tetras prefer large groups of at least 10 fish, so make sure to give them plenty of space to roam. They will greatly appreciate a well-planted tank, but it’s not necessary to keep them with live plants. Just give them plenty of hiding spots!
| Scientific Name: | Tucanoichthys tucano |
| Size: | 1 inch |
| Diet: | Omnivore |
| Temperament: | Peaceful |
| Tank Size: | 10 gallons |
| Water Temperature: | 68°F – 78°F |
| Water Hardness: | 5 – 20 dGH |
| pH Value: | 5.0 – 6.5 |
| Care Difficulty: | Moderate |
Hi fellow aquarists, I’m Ava and I’ve been an enthusiastic aquarium hobbyist for over four years now.
I’ve been amazed by these beautiful creatures since I was a kid and I’m thrilled to be sharing everything I’ve learned over the years with anyone who’s as passionate about the topic as I am.