Bloodfin Tetra 101: Care, Lifespan, Facts & More!

Bloodfin Tetra

Looking for an energetic and playful addition to your aquarium? Look no further than the Bloodfin Tetra!

These little fish are excellent for beginners and experienced fish enthusiasts alike.

With their bright colors and energetic personalities, they will bring life to any aquarium.

Keep reading to learn more about the Bloodfin Tetra and why they make such great pets!


Scientific NameAphyocharax Anisitsi
Common NameTrue Bloodfin, Glass Bloodfin, Red Finned Tetra
OriginNative to South America, especially in Argentina and some rivers in Brazil.
Minimum Tank Size15 gal (57 L)
LengthUp to 2 inches (5 cm)
DietEat all types of food: live, frozen, artificial.
Ease of CareEasy
pH6.5 to 8
TemperatureShould be between 18 and 28 degrees Celsius
BreedingEgg layers
Lifespan5 – 8 years

Bloodfin Tetra Origins

The Bloodfin Tetra is a freshwater fish found in Brazil and Bolivia’s rivers. It prefers to dwell in tributaries, distributaries and streams with floating plants and hanging vegetation draping them.

In addition to the Rio Paraná and the nations it passes through, Bloodfin Tetras can be found in most South American countries since they’re native to the Amazon Basin and are seen in Colombia and Peru.

Bloodfin Tetras are found in the upper and middle layers of water in the wild, so it’s no surprise that they also prefer similar aquarium waters. Crustaceans, small insects, and larvae are among their favorite foods in the wild.

What Are the Features of Bloodfin Tetra?

1. Appearance & Colors

Bloodfin tetras have distinctive colored tails and fins, as their name implies. Their bodies are iridescent, with a shade of green or blue.

They generally reach 1 ½ to 2 inches in length (3.8-5 cm), but some may grow up to 2 ¼ inches long (5.5 cm).

The female is larger and heavier than the male, owing to her capacity to carry eggs. Female first anal fins are also broader and have white beams.

The Bloodfin Tetra is silver in color, with a black line down its length. And much as many other species, the male is generally more brightly colored than the female.

2. Length

The average length of a Bloodfin Tetra is 1.5 to 2 inches (3.8-5 cm).

3 Weight 

The average weight of a bloodfin tetra is about 2 grams.

4. Lifespan,

The lifespan of a bloodfin tetra can vary, but on average, they live for 5-8 years.

However, some have been known to live for up to 10 years, so these fish can have a long and healthy life if they are well cared for.

The key to a bloodfin tetra’s longevity is a good quality of life, including a healthy diet and a clean and stress-free environment.

By giving your bloodfin tetra the best care possible, you can help them live a long and happy life.

Is Bloodfin Tetra Hardy?

The Bloodfin Tetra is a hardy fish that is easy to care for. They are a good choice for beginner aquarium hobbyists.

They are not demanding and will do well in most aquarium setups. However, it is essential to provide them with plenty of hiding places and swimming space.

How to Care for Bloodfin Tetra?

1. Tank Size

Bloodfin Tetras are tiny, but they are schooling fish that love to live with at least six of their kind.

They’re also active swimmers, meaning they require more space than your average fish.

The minimum tank size for a school of Bloodfin Tetras is 30 gallons (75 L), especially if you have different fish species.

2. Temperature

The ideal temperature for bloodfin tetras is between 18 and 28 degrees Celsius(64-82 degrees Fahrenheit). This range of temperatures allows the fish to stay healthy and active.

If the water is too cold, the fish may become sluggish and inactive. If the water is too warm, the fish may become stressed and susceptible to disease.

Remember, maintaining a consistent temperature in the aquarium is essential for the health of the bloodfin tetras.

3. PH Level

Bloodfin Tetra is sensitive to changes in pH, so it is essential to maintain the proper pH level in the tank. The ideal pH for a Bloodfin Tetra tank is 6.5 to 8.0.

If the tank’s pH drops below 6.5, the Bloodfin Tetra may become stressed and more susceptible to disease.

It is essential to test the water’s pH regularly and make adjustments to maintain a stable pH.

4. Lighting

As for lighting, go with something that will give the tank a dim, filtered look. Bloodfin tetras come from South America, so they’re used to dark, murky waters. Too much light, on the other hand, will stress them out.

Decorations and vegetation are essential to bloodfin tetras, so don’t skimp on those either. What might seem like excess to you will be just right for them.

Just be aware that dark substrate and plant life will mean you have to clean the tank more often.

5. Filters

Bloodfin tetras are relatively easy to care for, but they require a well-filtered tank. A good filter will remove harmful toxins and bacteria from the water, keeping the bloodfin tetras healthy.

Bloodfin tetras are also sensitive to changes in water quality, so a filter is essential for maintaining a stable environment.

Two primary filters can be used for bloodfin tetras: shower head filters and electronic water softeners.

Showerhead filters are less expensive and easier to install, but they require more maintenance.

Electronic water softeners are more expensive, but they last longer and provide a higher filtration quality.

6. Tank Decoration

When decorating your tank, remember that the Bloodfin Tetras prefer dim, filtered lighting and plenty of vegetation and driftwood in their tank.

Providing your fish with these natural elements will give them places to hide, reducing stress and keeping them healthy.

Bloodfin Tetra Diet

The diet of a Bloodfin Tetra in the wild consists of worms, brine shrimp, daphnia, and frozen food.

They will eat flake food in captivity, but it is essential to supplement their diet with meat and plants to ensure they get the best nutrition possible.

They are very active fish and need to eat more frequently than other fish.

We recommend following the 2-3 rule: 2-3 times a day and whatever they can eat within 2-3 minutes. This will help ensure your Bloodfin Tetra stays healthy and happy.

Bloodfin Tetra Compatibility

The bloodfin tetra is a peaceful community fish that gets along well with other fish of similar size and temperament.

They are not aggressive and will not bother other fish in the aquarium. Bloodfin tetras are also compatible with most other freshwater aquarium fish.

Bloodfin Tetra can be kept with the following fish:

  • Cories
  • Corydoras
  • Crabs
  • Danios
  • Guppy
  • Loricariids
  • Platy
  • Rasbora
  • Shrimp
  • Snails
  • Swordtail
  • South American dwarf cichlids
  • Other tetras

Bloodfin Tetra Predators:

  • Flowerhorn
  • Jaguar cichlid
  • Jewel cichlid
  • Mini dovii
  • Oscar fish
  • Red devil cichlid
  • Umbee cichlid
  • Wolf cichlid,

Bloodfin Tetra Gender Difference

Males and females of the Bloodfin Tetra have different physical characteristics that help identify their gender.

Males are typically thinner and lighter than females, with smaller anal fins.

Males also tend to be more colorful than females, with brighter fins and patterns on their bodies.

Females, on the other hand, usually have larger anal fins with white beams, and they may also have gill glands and hooks over their anal fins.

When choosing Bloodfin Tetras for your aquarium, select a mix of males and females to ensure that your fish have the best chance of reproducing.

Bloodfin Tetra Breeding

Bloodfin Tetras are not difficult to breed; however, there are a few things you will need to do to increase your chances of success.

First, you will need to provide them with a large enough tank. A 20-gallon tank is a good size for a pair of Bloodfin Tetras.

You will also need to make sure the water conditions are right. The water should be clean and well-filtered with a pH between 6.5 and 7.5. The temperature should be around 75 degrees Fahrenheit.

Once you have a suitable tank set up, you will need to add a few hiding places for the female Bloodfin Tetras.

They like to hide when they are ready to spawn, so adding some live plants or caves will give them the security they need.

When the female Bloodfin Tetras are ready to spawn, the male will chase her around the tank.

Then the female will lay her eggs in hiding places, and then the male will fertilize them.

The eggs will hatch in about 24 hours, and the fry will be free-swimming a few days later.

You can feed the fry live foods or exceptional baby food until they are big enough to eat regular fish food.

You can successfully breed Bloodfin Tetras with patience and attention and enjoy watching them raise their young in your aquarium.

Possible Diseases and Prevention

Bloodfin Tetras are susceptible to skin conditions, parasites, and bacterial infections, as are most fish.

Bacterial infections, for example, are often characterized by cloudy eyes, bulging eyes, redness on the fins or body, and lethargy.

If you see any of these symptoms, increase water changes and aeration and treat with a bacteria-specific medication.

And always remember that the prevention key is to maintain a clean and well-filtered tank.

If you do that, your Bloodfin Tetra will have a much better chance of staying healthy and happy.

Is Bloodfin Tetra Right For You?

If you’re thinking about starting an aquarium, bloodfin tetras are a great choice.

They’re easy to care for and beautiful to look at, and they’re also robust fish, so beginners don’t need to worry too much about accidentally harming them.

Bloodfin tetras are also peaceful and social, so they’ll do well with other aquarium inhabitants. Plus, it’s enjoyable to watch them swim around in their school.

So if you’re looking for a low-maintenance fish that will add some beauty and interest to your aquarium, bloodfin tetras are a great option.

Last Words

The fancy Bloodfin is a peaceful fish that can become a fantastic companion if you know how to look after them. Give it a go if you’re interested!

We hope you enjoyed this article as much as we did. If you have any questions, please share them with us in the comment section below.