Best for
Aquariums where its role fits: schooling midwater.
R
Fish · Freshwater
Rummy nose tetra
Hemigrammus bleheri
Rummy nose tetra is a very popular aquarium species suitable for well maintained home aquariums.
Difficulty
Intermediate
Aggression
5/10
Schooling
Yes
Size
5.00 cm
Minimum volume
80 L
Temperature
24.0-28.0 ºC
Zone
Midwater
Lifespan
5 years
Quick profile scan
fish
Territoriality
Low
Aggression
5/10
Activity
Moderate
Thermal sensitivity
Medium
Bioload
Low
Speed
Moderate
Predation risk
None
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Quick verdict
A practical summary to quickly decide whether it fits your aquarium.
Typical risk
Stability depends on temperature, group size, and real compatibility.
Aquarium zone
Where it lives best
Surface
Midwater
primary
Bottom
Quick compatibility
Community signals
Shrimp
Compatible
Snails
Compatible
Slow fish
Compatible
Aggressive fish
Conditional
Small fish
Compatible
Large fish
Compatible
Delicate plants
Conditional
Buying decision
Before buying Rummy nose tetra
Review these points before adding it to your aquarium. They are practical notes based on its profile, ecological data, and known relationships.
L
Adult volume
Make sure your aquarium is above 80 L before buying it.
G
Minimum group
Do not keep it alone if it needs a group; plan space for the right number of individuals.
Parameters
Water conditions
pH
5.5 - 7.0
GH
1 - 10
KH
0 - 5
Temperature
24.0 - 28.0 ºC
Growth and behavior
Juvenile to adult
Juvenile
As a juvenile it feels safer in a group and usually uses the midwater area with coordinated movement. An insufficient group can increase stress and erratic behavior.
Shift
The transition to adulthood usually brings more stable behavior when group size, space and parameters are suitable.
Adult
As an adult it keeps a strong social pattern and is more stable in adequate groups. In balanced communities it usually occupies the midwater area without causing major conflict.
Ecological profile
Role and biological pressure
Schooling Midwater
Community Fish
Small
Low
Moderate
None
Profile: midwater schooling species, with low bioload and primary use of the midwater area. It should be kept in a group to show stable behavior and reduce stress. Compatibility mostly depends on stable parameters, adequate space and tank mates with a similar activity level.
Ecological radar
profile
Territoriality
24%
Aggression
50%
Activity
52%
Thermal sensitivity
52%
Bioload
24%
Common mistakes
What to avoid
Keeping it in tanks below the recommended adult volume.
Keeping too few individuals for a social species.
Essential care
Keep it in a group and perform weekly water changes with stable parameters.
Daily time
10 min
Related biomes
Breeding
Breeding in aquariums is possible when good conditions are provided and a suitable setup is prepared.
Oviparous
Moderate
Machos algo más esbeltos; hembras más robustas
Alerts and health
- Acuario maduro
- Grupo grande
- Agua estable
Common issues
Ich
Parásitos externos
Expert notes
Interesting details
01
Es una especie muy popular en acuariofilia
02
Se aprecia más cuando se mantiene correctamente
Editorial confidence
Last review: June 2026
Content based on parameters, ecological profiles and manual relationships.
Profile data
Ecological profile
Manual relationships
General aquarium observation
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