Brilliant Rummy-Nose Tetra
Hemigrammus bleheri
One of the tightest schooling fish in the aquarium hobby, known for their striking bright red faces and black-and-white horizontally striped tail fins. They are highly active and need plenty of horizontal swimming space. The intensity of their red 'nose' serves as an excellent biological indicator of water quality and stress; it fades significantly if water parameters drop or they feel insecure.
Brilliant Rummy-Nose Tetra At a Glance
Brilliant Rummy-Nose Tetra Tank Requirements
Will Brilliant Rummy-Nose Tetra fit in your tank?
Care guides tell you what Brilliant Rummy-Nose Tetra needs, the next question is whether your tank can safely provide it. Test Brilliant Rummy-Nose Tetra against your tank size, maintenance needs, and the fish you already keep before you buy.
Brilliant Rummy-Nose Tetra Water Parameters
Brilliant Rummy-Nose Tetra Temperament & Compatibility
Brilliant Rummy-Nose Tetra Varieties
Each variety inherits the species defaults above. Only differences are highlighted.
Standard
Same care requirements as the base species
Also known as: Wild Type, Firehead
Brilliant Rummy-Nose Tetra Care Guide Summary
The Brilliant Rummy-Nose Tetra, scientifically known as Hemigrammus bleheri, belongs to the Characins family group. Adults reach a maximum size of approximately 5 cm and have a fusiform body shape with a moderate growth rate. Classified as peaceful, this species primarily occupies the mid-level and bottom zones of the aquarium and produces a low level of biological waste.
To thrive, the Brilliant Rummy-Nose Tetra requires a freshwater only aquarium with a minimum volume of 75 litres and a tank length of at least 60 cm. Water temperature should be maintained between 24°C and 28°C, with a pH range of 5–7 and a general hardness of 1–8 dGH. A moderate water flow is preferred.
The Brilliant Rummy-Nose Tetra is a rewarding species to keep, provided its core environmental needs are met. The Brilliant Rummy-Nose Tetra is typically available in one standard form.
Brilliant Rummy-Nose Tetra Habitat Setup
When setting up an aquarium for the Brilliant Rummy-Nose Tetra, a moderate water flow best suits their natural preferences. Because this species occupies the mid-level and bottom zones, the aquarium layout should prioritise open swimming space in the centre of the tank for free movement and sufficient floor space with hiding spots among rocks, wood, or dense planting. Useful additions include leaf litter or blackwater tannins to replicate their natural soft-water habitat and dense planting to provide cover, break sightlines, and reduce stress.
Brilliant Rummy-Nose Tetra Compatibility Notes
Classified as peaceful, the Brilliant Rummy-Nose Tetra is a schooling species that feels most secure in a sizeable group, where natural shoaling behaviour reduces stress and brings out their best colours. When choosing tankmates, their energetic swimming style may stress more sedentary or timid species. Selecting tankmates that favour different water layers from the mid-level and bottom zones can help reduce competition and territorial overlap.
Who Brilliant Rummy-Nose Tetra Is Actually For
Brilliant Rummy-Nose Tetra is best for a fishkeeper who wants a species that can settle into a calmer community setup and can provide a keeper who can commit to a proper group of at least 6. It makes the most sense for a hobbyist who will actually build around its needs, especially plants.
The most common mistake is buying Brilliant Rummy-Nose Tetra for looks first and only later discovering how its adult size, behavior, or bioload changes the whole tank plan. Another frequent problem is underestimating its social needs. A token pair or trio often behaves very differently from a real group.
Brilliant Rummy-Nose Tetra Recommended Tank Sizes
Standard aquarium sizes that meet the minimum volume and length requirements for Brilliant Rummy-Nose Tetra.
20 Gallon High
20 Gallon Long
29 Gallon Standard
30 Gallon Breeder
36 Gallon Bowfront
40 Gallon Breeder
Show 17 more tank sizes
Frequently Asked Questions About Brilliant Rummy-Nose Tetra
How big does Brilliant Rummy-Nose Tetra get?
Brilliant Rummy-Nose Tetra (Hemigrammus bleheri) typically reaches a maximum adult size of approximately 5 cm. They have a fusiform body shape and a moderate growth rate.
What tank size does Brilliant Rummy-Nose Tetra need?
A minimum aquarium volume of 75 litres and a tank length of at least 60 cm are recommended for Brilliant Rummy-Nose Tetra. This ensures enough swimming space and helps maintain stable water conditions.
What water parameters does Brilliant Rummy-Nose Tetra need?
Brilliant Rummy-Nose Tetra thrives in freshwater only conditions with a temperature range of 24–28°C, a pH between 5 and 7, and a general hardness of 1–8 dGH. A moderate water flow is preferred.
Is Brilliant Rummy-Nose Tetra peaceful or aggressive?
Brilliant Rummy-Nose Tetra is classified as peaceful with an aggression score of 1 out of 10. They are generally well-suited to peaceful community tanks.
How many Brilliant Rummy-Nose Tetra should be kept together?
Brilliant Rummy-Nose Tetra is a schooling species and should be kept in groups of at least 6. Larger groups help distribute aggression and encourage natural schooling behaviour.
Does Brilliant Rummy-Nose Tetra have any special tank requirements?
Yes. Brilliant Rummy-Nose Tetra benefits from plants - densely covered and leaf litter/blackwater in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.
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Guidarium Editorial Desk
Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.
- Last reviewed
- May 1, 2026
- Last updated
- May 1, 2026
- Issues or corrections?
- Contact the editorial team
Top Tank Mates for Brilliant Rummy-Nose Tetra
These fish are strong compatibility matches for Brilliant Rummy-Nose Tetra based on water preferences, temperament, adult size, and tank behavior.
Japanese Ricefish (Medaka)
Oryzias latipes
Ideal Tank MatesScissortail Rasbora
Rasbora trilineata
Ideal Tank MatesRose Danio
Danio roseus
Ideal Tank MatesTiger Danio
Devario maetaengensis
Ideal Tank MatesWestern Rainbowfish
Melanotaenia australis
Ideal Tank MatesWaigeo Rainbowfish
Melanotaenia catherinae
Ideal Tank MatesPlants That Suit Brilliant Rummy-Nose Tetra
These plants pair well with Brilliant Rummy-Nose Tetra based on shared water preferences, layout fit, and how likely they are to hold up in the same aquarium.
Afzel's Anubias
Anubias afzelii
Amazon Sword
Echinodorus amazonicus
Anacharis
Egeria densa
Anubias Barteri
Anubias barteri
Baby Tears
Lindernia rotundifolia
Balansae
Cryptocoryne crispatula
Fish Similar to Brilliant Rummy-Nose Tetra
Rummy-Nose Tetra
Hemigrammus rhodostomus
Renowned as the tightest schooling fish in the freshwater hobby. They feature a bright red nose, a silver body, and a black-and-white checkered tail. They are excellent 'indicator fish'; their red noses will fade to pale pink if water quality drops or the fish are stressed. While there are three very similar species (H. rhodostomus, H. bleheri, P. georgiae) often sold under the same name, their care requirements are identical.
False Rummy-Nose Tetra
Petitella georgiae
A small, peaceful, and highly active schooling fish known for its bright red snout and black-and-white striped tail. Often confused with the True Rummy-Nose (Hemigrammus rhodostomus) or Firehead Tetra (Hemigrammus bleheri), the 'False' Rummy-Nose is distinguished by red coloration that typically does not extend past the gills. They are excellent indicator fish; their red noses will pale if water quality drops. They require ample horizontal swimming space and pristine water conditions.
Red Eye Tetra
Moenkhausia sanctaefilomenae
The Red Eye Tetra is a hardy, active schooling fish recognizable by the bright red upper half of its eye and a striking black and yellow band at the base of its tail. As a robust and highly adaptable species, it is excellent for beginners. However, they are highly active and can become 'fin nippers' if kept in groups smaller than 6 or in confined spaces.
Rosy Finned Tetra
Hyphessobrycon rosaceus
A beautiful, deep-bodied tetra known for its reddish-pink hue and striking dorsal fin, which features a prominent black patch and white tip. They are peaceful, active schooling fish that thrive in heavily planted tanks with slightly acidic, soft water. Males frequently engage in harmless mock-battles by flaring their fins to establish hierarchy.
Serpae Tetra
Hyphessobrycon eques
A striking, deep-red schooling fish known for its highly active nature. While hardy and beautiful, Serpae Tetras are notorious fin-nippers. This behavior is usually localized within their own pecking order if kept in large enough schools (8+), but they should never be housed with slow-moving or long-finned tank mates like Bettas, Angelfish, or Gouramis.
Lemon Tetra
Hyphessobrycon pulchripinnis
A peaceful, deep-bodied schooling tetra known for its translucent yellow coloration and striking black and yellow fins. They are robust and active, making them an excellent choice for planted community aquariums. Their colors intensify significantly in a well-established tank with a dark substrate and proper schooling numbers.