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Discover the Beauty of Big Tetras: Tips for Aquarium Fish, Decorations, Equipment, and General Care

Big tetras are a popular species of aquarium fish that are known for their bright colors and active swimming habits. They make a great addition to any aquarium, and their care is relatively easy compared …

Big tetras are a popular species of aquarium fish that are known for their bright colors and active swimming habits. They make a great addition to any aquarium, and their care is relatively easy compared to other aquarium fish. In this article, we will discuss big tetras, their decorations, equipment, and general care. We will also provide tips on how to keep your big tetras healthy and happy.

Types of Big Tetras

Types Of Big Tetras

Larger Tetras

Larger tetras, such as the Black-skirt tetra, are some of the most popular aquarium fish. They are easy to keep and can reach a maximum size of up to 8 inches (20 cm) when kept in optimal conditions. They are generally peaceful and can live in a variety of water parameters, making them an ideal choice for most beginner aquarists.

Big Tetras

Big tetras, such as the Giant Danio, are much larger than their smaller tetra cousins. They can grow up to 12 inches (30 cm) in length, and are best kept in big tanks with plenty of room to swim. They are active and require higher levels of oxygen in their aquariums, so they should be kept in tanks with good filtration, as well as plenty of open swimming space. They can be kept in groups and often display fascinating schooling behavior.

Aquarium Setup for Big Tetras

Aquarium Setup For Big Tetras


When setting up the aquarium for big tetras, the decorations should be carefully chosen. Live plants and rocks can provide hiding spots for the tetras, as well as create a more natural environment. Artificial decorations should be avoided as they can contain material that may be toxic to the fish.


Lighting plays an important role in the health of the fish. Proper lighting is necessary for the plants to be able to carry out photosynthesis. The aquarium should be equipped with a light that provides enough brightness to support the growth of the plants.


Filtration is essential for the maintenance of water quality. The filter should be powerful enough to turn over the aquarium water several times per hour. It is also important to use a filter that is designed for the specific size of the aquarium.


In order to maintain the optimal temperature for the big tetras, a heater should be installed in the aquarium. The heater should be set to the temperature recommended for the species, which is usually between 75°F and 80°F. It is also important to check the heater regularly to make sure it is functioning properly.

General Care of Big Tetras


Big Tetras are omnivores, so their diet should include both plant and animal matter. Provide a variety of frozen and live foods, such as bloodworms, daphnia, brine shrimp, and tubifex. High-quality flake or pellet foods are also suitable. Feed small amounts multiple times per day.

Water Quality

Big Tetras prefer a neutral pH, around 7.0, and a water temperature of 72-82°F (22-28°C). Frequent water changes are essential for maintaining good water quality. A 10-15% water change should be done weekly.

Aquarium Maintenance

Big Tetras should be kept in tanks of at least 20-30 gallons, with plenty of hiding places. Provide a soft, sandy substrate and plenty of live or artificial plants for the fish to explore. Include a filter to keep the water clean, and do regular partial water changes to keep ammonia and nitrate levels low.

Frequently Asked Questions

What kind of water conditions do Big Tetras require?

  • Temperature: Big Tetras require warm water, with temperatures ranging from 72 to 82°F (22-28°C).
  • pH: Big Tetras prefer neutral pH, around 7.0.
  • Water hardness: Big Tetras do best with soft to medium hard water.
  • Aquarium setup: Big Tetras are a schooling species and should be kept in groups of at least 6-8 individuals. They require a large tank with plenty of hiding places, as well as plenty of plants and open swimming space.

How often should Big Tetras be fed?

  • Adult Big Tetras should be fed twice a day. A small amount of food should be given each time, and the amount should be consumed in a few minutes.
  • Juvenile Big Tetras should be fed three to four times a day. Their diet should be varied in order to provide them with the necessary nutrients for growth.
  • Pregnant Big Tetras should be fed at least three times a day. High quality food should be provided to ensure the health of the fry.

What kind of tank size is best for keeping Big Tetras?

Big Tetras need at least a 20-gallon tank, with a minimum of 30 gallons being preferable. The more space they have, the better. Aquariums with plenty of plants and hiding spots are a must, as they need places to seek shelter. The addition of a few tank mates of a similar size should also be considered. A good filtration system is also essential, and a heater is recommended if you live in a cooler climate.

What Kind of Decorations Should Be Used in a Tank with Big Tetras?

Aquarium decorations for Big Tetras should provide plenty of hiding places and places to swim. Driftwood, rocks, and plants are all great options, as they provide natural hiding places, while also creating a visually appealing environment. Artificial plants are a great alternative to live plants, as they are much easier to maintain. Additionally, it is important to provide plenty of open areas in the tank, as Big Tetras are active swimmers.

What other fish species can be kept with Big Tetras?

Big Tetras prefer to be kept in groups, and they should be kept with fish of similar size and temperament. Some of the compatible species include:

  • Guppies – Guppies are peaceful, colorful fish that can add life and color to your aquarium.
  • Mollies – Mollies are a lively, colorful fish that are great companions for Big Tetras.
  • Platys – Platys are peaceful, colorful fish that are great for any community aquarium.
  • Gouramis – Gouramis are peaceful, active fish that can make great tankmates for Big Tetras.
  • Corydoras – Corydoras are peaceful, bottom-dwelling scavengers that can help keep your aquarium clean.
  • Danios – Danios are active, schooling fish that can add activity to your aquarium.

It is important to remember that Big Tetras are sensitive to water quality, so it is important to choose fish that are compatible with the tank’s water parameters and stocking level. It is also important to avoid aggressive fish that may pick on the smaller Big Tetras.


Big tetras are a great choice for an aquarium and are relatively easy to care for. They come in a variety of colors, sizes and shapes, and they can be used as both a solitary fish or in a school. They also make great tank decorations and can be kept in groups of up to eight. They are a hardy species and don’t require a lot of specialized equipment. With proper care, big tetras can live for up to seven years.


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