Rummy Nose Tetra: Profile, Tank, Care, Breeding & More

Scientifically known as Hemigrammus rhodostomus
Dr. Mollie Newton
Published by Dr. Mollie Newton PHD| Senior Editor
Last updated: July 16, 2024
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Having trouble keeping those Rummy Nose Tetras happy and healthy? This **easy-to-follow guide** offers *expert tips and advice* for ensuring these lively fish thrive in your tank. Learn the **secrets** to creating the perfect underwater world for these fascinating swimmers from South America. Dive in now and uncover how to make them feel at home!

Article Summary

  • Rummy Nose Tetras are native to South America and belong to the Characidae family of fishes.
  • With proper care and attention, Rummy Nose Tetras can live up to 5 to 6 years in captivity.
  • Their diet includes both live and prepared foods, and they should be fed a balanced diet to maintain their health.

Species Profile

The rummy nose tetra, scientifically known as Hemigrammus rhodostomus, is a captivating species native to the wilds of South America. Belonging to the Characidae family of fishes, this fish has gained popularity among aquarium enthusiasts for its vibrant colors and peaceful nature.

In its natural habitat, the rummy nose tetra can be found in various freshwater environments, particularly in slow-moving rivers and streams. These communal creatures thrive in schools and are often seen swimming together with other fish species.

Average Lifespan

With proper care and attention, they can live up to 5 to 6 years in captivity. However, several factors can influence their lifespan. Providing a suitable environment that mimics their natural habitat is essential for their overall well-being and longevity.

Factors Affecting Lifespan

Attentive care plays a crucial role in ensuring optimal health and longevity for these fascinating fish. Maintaining water quality by regularly monitoring pH levels, temperature, and filtration systems is vital. Providing a balanced diet consisting of high-quality fish food helps meet their nutritional needs.

By creating an environment that closely resembles their natural surroundings and offering attentive care, aquarists can enjoy the beauty of these tetras for many years to come. So if you’re looking to add some vibrant color and tranquility to your aquarium community, consider welcoming these delightful South American natives into your aquatic haven.

Remember to research specific requirements for keeping rummy nose tetra before adding them to your tank. With the right conditions and care, these captivating creatures will reward you with their stunning presence and peaceful demeanor.

Rummy Nose Tetra Characteristics

The Rummy Nose Tetra is a small fish known for its vibrant silver coloration and distinctive black and white horizontal stripe on the tail fin.

One of Rummy-nose tetra’s most fascinating features is the red coloration on its nose…

One of its most fascinating features is the red coloration on its nose, which intensifies during times of stress or courtship. These characteristics make it a captivating addition to any aquarium.

When fully grown, they typically reach an average size of around 2.5 inches, making them suitable for smaller tanks as well.

True, Brilliant, and False Rummy-Nose Tetras

In the world of aquarium fish, there are various types of rummy-nose tetras that are popular among hobbyists. One particular group that stands out is the True, Brilliant, and False rummy-nose tetras. These tetras are known for their vibrant colors and distinctive markings, making them a visually striking addition to any aquarium.

However, it’s important to understand the differences among these three species to ensure proper care and compatibility with other fish species. In this section, we will explore the characteristics of True, Brilliant, and False rummy-nose tetras, shedding light on their unique features and helping you make an informed decision when choosing the perfect tetra for your aquarium.

True Rummy Nose Tetra

The true Rummy Nose Tetra, scientifically known as Hemigrammus rhodostomus, is characterized by its distinct red nose and black stripe that runs horizontally across its body. This stripe extends from the nose to the base of the tail, giving the fish a vibrant and eye-catching appearance.

Rummy Nose Tetra is characterized by its distinct red nose and black stripe…

The red coloration on the nose intensifies when the fish is in a comfortable and stress-free environment, making it a popular choice among aquarium enthusiasts.

Brilliant Rummy Nose Tetra

A School of Brilliant Rummy Nose Tetra
A School of Brilliant Rummy Nose Tetra

The brilliant Rummy Nose Tetra, also known as Petitella georgiae, features a more intense red coloration on its nose compared to the true Rummy Nose Tetra. This vibrant red hue extends further down the body, creating a striking contrast against the silver-white coloration.

Additionally, the black stripe on the brilliant Rummy Nose Tetra is narrower and more defined, adding to its overall brilliant appearance.

False Rummy Nose Tetra

The false Rummy Nose Tetra, scientifically referred to as Petitella mimula, closely resembles the true Rummy Nose Tetra in terms of appearance. However, there are subtle differences that set them apart.

The false Rummy Nose Tetra has a less prominent red nose, which may appear more orange in color. The black stripe on these tetra is also less defined and may appear slightly broken or irregular. These differences, although subtle, help distinguish the false Rummy Nose Tetra from its true counterpart.

Temperament And Behavior

Rummy Nose Tetras are known for their passive and gentle temperament, making them a popular choice for community aquariums. These fish are peaceful and rarely show aggression towards other tankmates.

They prefer to swim in groups and exhibit shoaling behavior, which means they feel more secure and comfortable when surrounded by their own kind. Shoaling behavior also helps them to navigate their environment and find food more easily.

When it comes to their preferred habitat within the tank, they tend to occupy the middle-water level. This means they swim in the middle portion of the tank, neither near the surface nor the bottom.

This behavior is important to note when planning the layout of your aquarium, as it allows you to create different zones for fish that prefer different levels in the water column. They are not territorial fish and do not require a large amount of space to thrive.


Rummy-nose Tetra displays minimal territorial behavior and will happily coexist with other fish in a well-maintained aquarium.

However, it’s important to provide them with plenty of hiding spots and plants to mimic their natural habitat and give them a sense of security.

Overall, the passive and gentle nature of these tetras, their shoaling behavior, preference for the middle-water level, and minimal territorial requirements make them an excellent choice for both beginner and experienced fishkeepers.

Suitability in an Aquarium

Rummy nose tetras are highly suitable for aquariums due to their unique characteristics and peaceful nature. These fish have gained popularity among aquarium enthusiasts for their striking appearance and vibrant colors. With their red noses and black triangular markings on their bodies, these tetras add a captivating touch to any aquatic world.

Factors of Suitability

One of the main reasons why they are suitable for aquariums is their peaceful temperament. They are known for their calm and non-aggressive behavior, making them excellent tank mates for other peaceful fish species. They rarely show signs of aggression towards other fish and are generally easy to care for.

Another factor that makes them suitable for aquariums is their adaptability to different tank setups. They can thrive in a variety of water conditions, including both soft and hard water. This makes them a versatile choice for aquarium owners who may have different water parameters in their tanks.

These tetras are also known to be schooling fish, meaning they prefer to be kept in groups of at least six or more. Keeping them in a school not only enhances their natural behavior but also reduces stress and promotes their overall well-being.


Provide rummy nose tetra with ample swimming space and hiding spots within the aquarium to ensure their comfort.

In terms of feeding, these tetras are not picky eaters. They readily accept a variety of foods, including flakes, pellets, and freeze-dried or live foods. It is recommended to provide them with a balanced diet to maintain their health and vibrant colors.

Overall, they are highly suitable for aquariums due to their striking appearance, peaceful temperament, adaptability, and schooling nature. Whether you are a beginner or an experienced aquarium owner, these captivating fish are sure to bring beauty and tranquility to your aquatic world.

Tank Conditions

Rummy nose tetras have specific tank conditions they prefer. It’s important to mimic their natural habitat to ensure their well-being and happiness. Here are some key points to consider when setting up a tank for rummy nose tetra:

Water Parameters

They thrive in slightly acidic water conditions with a pH range of 6.0 – 7.0. Maintaining the right temperature is also crucial, with an ideal range of 75°F – 82°F (24°C – 28°C).

Aquarium Setup

To provide ample swimming space, it’s recommended to have at least a 20-gallon tank. Adding suitable tank decorations such as sand, rocks, logs, and driftwood can create a more natural environment for them.

Aquatic Plants

Rummy Nose Tetra With Aquatic Plants
Rummy Nose Tetra With Aquatic Plants

They enjoy an aquarium with plenty of aquatic plants. These plants not only enhance the aesthetics but also provide hiding spots and contribute to the overall health of the tank.

Water Quality

Regular filtration and partial water changes are necessary to maintain well-maintained water quality for these tetras. External filters, peat filtration, and under-gravel filters can be advantageous in achieving optimal water conditions.

Tank Mates

When selecting tank mates, it’s essential to choose peaceful community fish that are compatible with them. Some suitable options include Dwarf-crayfish, Green Neon Tetras, Danios, Pearl Gouramis, Bluespotted cory and other Corydoras Catfish like the Peru Black Cory.

However, it’s important to avoid aggressive fish that may harm or stress out the rummy nose tetras and large fish (for example a catfish, like the Sun catfish) that may see these tetras as prey.

By considering these factors, such as water conditions, aquarium setup, aquatic plants, water quality maintenance, and compatible tank mates when creating a suitable environment for these tetras will help ensure their well-being and create an enjoyable aquatic habitat in your home.

Rummy Nose Tetra Diet And Health

Rummy nose tetras are an omnivorous species that have a diverse diet. They feed on both live and prepared foods, with preferences for plant-based materials and protein.

These little fish enjoy small invertebrates like daphnia or brine shrimp larvae, which they can easily snatch up with their tiny mouths.

Supplement their diet with vegetable matter to ensure their nutritional needs…

They readily accept high-quality flake or pellet foods as a staple diet. However, it’s essential to supplement their diet with vegetable matter to ensure their nutritional needs are met.

Options like spirulina flakes or blanched vegetables work well as supplementary food sources.

It’s important to note that overfeeding can lead to health issues for these schooling fish. Excess food can pollute the tank water and cause various problems. Therefore, it’s crucial to provide them with appropriate portions that they can consume within a few minutes each day.

Health And Care

In terms of health and care, rummy nose tetras may exhibit a semi-transparent greenish tint and reddish coloration when stressed. It’s essential to monitor their behavior closely and address any signs of distress promptly.

Like other fish species, these tetras are susceptible to common diseases such as Dropsy and Ich. Familiarizing yourself with the symptoms of these illnesses is crucial for early detection and treatment.

To maintain healthy tetras, it’s vital to consider the overall tank conditions. Poor nutrition can contribute to weakened immune systems, making them more susceptible to diseases. Providing a balanced diet along with proper tank maintenance will help keep them happy and thriving.

How to Breed Rummy-nose Tetra

Breeding can be a challenging endeavor due to the difficulty in sexing these fish. As egg-scattering species, they exhibit no parental care for their eggs or fry. However, with the right conditions and proper care, successful breeding can be achieved.

Breeding Attempt

To create suitable conditions for breeding, it is important to maintain specific temperature and filtration requirements in the breeding aquarium. These boisterous fish thrive in temperatures between 75-82°F (24-28°C) and prefer a well-filtered environment.

Rummy Nose Tetra: Spawning

During courtship displays, males display more intense red coloration, making the pair quite striking to observe. Females lay adhesive eggs among fine-leaved plants within the breeding tank. The eggs typically hatch within 24 to 36 hours, and after about five days, the fry become free-swimming.

Caring for the fry is crucial during this stage. Providing appropriate nutrition is essential for their growth and development. Baby brine shrimp or finely crushed flake food are suitable options to feed the young rummy nose tetras.

Frequently Asked Questions

Are rummy nose tetras hard to keep?

Rummy nose tetras are generally considered to be a suitable choice for beginners in the aquarium hobby. They are relatively hardy and can adapt to a variety of water conditions. However, like all fish, they do have specific care requirements that should be met to ensure their well-being. Providing them with a well-maintained tank, stable water parameters, and a balanced diet will help keep them healthy and thriving.

How many rummy nose tetras should be kept together?

Rummy nose tetras are social fish and thrive in groups. It’s recommended to keep them in a group of at least six individuals or more. Larger groups create a more natural and visually appealing display in your aquarium. Keeping them in a group also reduces stress and encourages their vibrant red coloration, making for a happier and healthier school of fish.

Are rummy nose tetras aggressive?

Rummy nose tetras are generally peaceful and not considered aggressive. They are known for their calm demeanor and tend to coexist well with other non-aggressive fish species. However, like any fish, occasional territorial disputes or nipping behavior may occur, especially if they feel overcrowded or threatened. Providing ample space and suitable tankmates can help minimize such behavior.

Are rummy nose tetras top swimmers?

Yes, rummy nose tetras are primarily top and mid-level swimmers in the aquarium. They tend to stay in the upper regions of the tank, especially when they feel safe and comfortable. Their striking red noses and vibrant colors make them an attractive addition to the upper levels of your aquarium, creating a visually appealing display.

Do Rummy Nose Tetras eat shrimp?

Rummy Nose Tetras are generally peaceful community fish and primarily feed on small invertebrates and aquatic insects in the wild. While they have tiny mouths, they may occasionally nibble on very small shrimp fry or baby shrimp. However, they are unlikely to pose a significant threat to adult shrimp in a well-maintained aquarium with plenty of hiding places for the shrimp. Providing a balanced diet for your Rummy Nose Tetras and ensuring appropriate tank conditions will help promote peaceful coexistence between these fish and shrimp in your aquarium.

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