Best for
Aquariums where its role fits: algae grazer.
S
Fish · Freshwater
Siamese algae eater
Crossocheilus siamensis
Siamese algae eater is a very popular aquarium species suitable for well maintained home aquariums.
Difficulty
Intermediate
Aggression
2/10
Schooling
Yes
Size
14.00 cm
Minimum volume
100 L
Temperature
24.0-27.0 ºC
Zone
Bottom
Lifespan
5 years
Quick profile scan
fish
Territoriality
Low
Aggression
2/10
Activity
Fast
Thermal sensitivity
Medium
Bioload
Medium
Speed
Fast
Predation risk
None
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Analyze volume, parameters, behavior and relationships with other species.
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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
Bottom
primary
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 Siamese algae eater
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 100 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
6.5 - 7.5
GH
5 - 15
KH
3 - 8
Temperature
24.0 - 27.0 ºC
Growth and behavior
Juvenile to adult
Juvenile
As a juvenile it is usually more flexible and less dominant than an adult. Even so, it benefits from cover, stable parameters and tank mates that do not compete intensely in the bottom.
Shift
The transition to adulthood usually brings more stable behavior when group size, space and parameters are suitable.
Adult
As an adult it behaves as a algae-grazing species and needs space, tank mates and activity level to be well balanced. Its impact increases when bioload or competition is high.
Ecological profile
Role and biological pressure
Algae Grazer
Bottom Cleaner
Medium
Medium
Moderate
None
Profile: algae-grazing species, with medium bioload and primary use of the bottom. It can adapt to calm communities, although it usually behaves better with compatible companions. Compatibility mostly depends on stable parameters, adequate space and tank mates with a similar activity level.
Ecological radar
profile
Territoriality
24%
Aggression
20%
Activity
78%
Thermal sensitivity
52%
Bioload
52%
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
- Espacio para nadar
- Corriente moderada
- Oxigenación
Common issues
Ich
Parásitos
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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