Bloodfin Tetra Care Guide – Diet, Breeding & More

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The Bloodfin Tetra has a subtle beauty that often goes overlooked, but it is a great choice for a pet fish. 

This particular Tetra isn’t very high maintenance, so it is a good choice for beginners. They are very active fish with lots of personalities.

Bloodfin Tetra Appearance

Bloodfin Tetras have a silver body with orange dorsal and pectoral fins, as well as some on their tail. These fish typically grow to approximately two inches in length and live anywhere from five to seven years.

The better you take care of them, the longer they will live. One of the interesting things about these fish is that their color fades a bit when they get scared.


You’ll most likely notice that your Bloodfin Tetra will take a little while to become social. They have a tendency to hide away when not kept with lots of other fish. These fish can be very active and swim around a lot under the right conditions. They are known for being particularly fast swimmers, especially in the wild.

If you keep multiple Bloodfins in the same aquarium, you will probably notice them nip at each other sometimes. This usually isn’t a big deal, but if it becomes more serious you’ll need to take out the problem fish. Simply look for the one that is instigating.

Bloodfin Tetra swimming in a grass

Natural Habitat

These Tetras are naturally found in freshwater bodies across South America. They only occupy subtropical habitats.

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Bloodfin Tetra Care Guide

1. Tank Setup

If you are going to keep Bloodfin Tetras, you should get a tank that is between 10 and 20 gallons. When it comes to these fish, bigger is always better. They tend to be fairly active, which requires lots of room for swimming around. These fish usually spend the majority of their time in the middle to the higher part of the aquarium.

It is a good idea to put some plants in your Tetra’s tank, but make sure they aren’t made of plastic. Silk plants are a good option for this sort of tank setup. Plastic is simply too abrasive and could actually injure these fish. java moss is another good idea that you should consider. It is imperative that they have plenty of places to hide, as they can be skittish at first.

2. Water Conditions

The water inside of your Tetra’s aquarium should always be kept at a temperature of 70 to 80 degrees Fahrenheit. You also want to make sure the pH level stays between six and eight. This will ensure the most comfortable environment for your fish.

3. Bloodfin Tetra Tank Mates

Bloodfin Tetras are fairly calm and relaxed fish, so finding tank mates for them shouldn’t be much of a chore. Just make sure that you do not keep any of these fish with other species that are too bold. These Tetras are prone to be bullied, so it is imperative that you keep this in mind.

You will be able to keep Bloodfins with other small fish, such as the Green Neon Tetra or the Salt and Pepper Catfish.

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4. Bloodfin Tetra Food

These Tetras tend to eat lots of small insects like silkworms and brine shrimp in the wild. You can also give them daphnia and tubifex worms, as well as some frozen food. It is important that they have a balanced diet so as to get all of their nutritional needs met.

You’ll want to give these fish a good amount of food each day, as they do a lot of swimming around. Just make sure that you never give them more than they will be able to eat within a period of three minutes.

Common Health problems

There are certain health problems that Bloodfin Tetras can develop, including bacterial infections, worms, skin flukes, and a variety of parasitic infections. It is therefore important that you keep a close eye on your fish for irregular behavior.

If your Tetra isn’t quite as active as it normally is, there could be something wrong. You also want to look out for any abnormal growths on their body. This could be a sign of skin flukes or something else.

It’s also possible that your fish is sick if they seem to be swimming strangely or parts of their fins are rotting. These fish sometimes develop bloated fins when they are sick, which is something else to take note of. The sooner you get them the appropriate treatment, the better their chances will be of surviving.

Bloodfin Tetra Breeding

If you want to breed Bloodfin Tetras, you’ll need to give the couple you have selected a good amount of privacy. This means having a separate tank that is designated strictly for this purpose. Make sure that the water in the tank is maintained so that these fish stay healthy all the way through the breeding process.

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You can expect these fish to lay hundreds of eggs within a very short span of time. You’ll need to have plants with wide leaves in the breeding tank in order for everything to go smoothly. It is important to take out each of the parents once the eggs have been laid. This will serve to keep them safe.

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  • The Bloodfin Tetra is mostly silver with some reddish-orange coloration on various parts of their body.
  • These fish have a reputation for being peaceful and calm overall.
  • If you keep these Tetras together in the same tank, they might do some playful nipping at each other.
  • If you notice any truly aggressive nature between these fish, you should immediately take out the trouble maker.
  • The water in this fish’s tank should always be kept at 70 to 80 degrees Fahrenheit with a pH of six to eight.
  • A combination of frozen food and various small insects is best for this fish’s daily diet.
  • Bloodfins can get along with lots of fish in the same tank, but you don’t want to put in any that might bully them.
  • Keep an eye out for problems with your fish’s fins, including any rotting or bloating.
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