Best for
Aquariums where its role fits: algae grazer.
Fish · Freshwater
Bristlenose pleco
Ancistrus cirrhosus
Ancistrus cirrhosus is a popular loricariid because of its manageable size and grazing behavior. Still, it is not just a glass cleaner: it needs wood, shelters, vegetable food and bottom space.
Adult males may defend caves and show moderate territoriality, especially toward other loricariids or males of their own species.
Difficulty
Beginner
Aggression
3/10
Schooling
Low
Size
12.00 cm
Minimum volume
100 L
Temperature
23.0-27.0 ºC
Zone
Bottom
Lifespan
5 years
Quick profile scan
fish
Territoriality
Medium
Aggression
3/10
Activity
Slow
Thermal sensitivity
Medium
Bioload
Medium
Speed
Slow
Predation risk
None
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Quick verdict
A practical summary to quickly decide whether it fits your aquarium.
Compatible with
Has positive or conditional references with species such as Cherry shrimp.
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 Bristlenose pleco
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.
Parameters
Water conditions
pH
6.0 - 7.5
GH
3 - 15
KH
1 - 8
Temperature
23.0 - 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 does not rely on a strong school, but it still needs a balanced community without harassment. Compatibility mostly depends on stable parameters, adequate space and tank mates with a similar activity level.
Ecological radar
profile
Territoriality
52%
Aggression
30%
Activity
24%
Thermal sensitivity
52%
Bioload
52%
Common mistakes
What to avoid
Keeping it in tanks below the recommended adult volume.
Relations
Compatible with
✓
C
Cherry shrimp
Compatible
Main risk: Water parameters
Low risk
Ancistrus cirrhosus + Neocaridina davidi: cohabitation is usually viable if volume, parameters, groups and adult behavior are respected.
Oscar
Conditional
Main risk: Adult space
Review conditions
Astronotus ocellatus + Ancistrus cirrhosus: size difference, activity level or space pressure may cause stress, competition or insufficient usable room.
G
Goldfish
Conditional
Main risk: Adult space
Review conditions
Carassius auratus + Ancistrus cirrhosus: size difference, activity level or space pressure may cause stress, competition or insufficient usable room.
Essential care
Include natural wood, caves and shaded areas. Keep good oxygenation and control waste, as its bioload is not negligible. Avoid overly small tanks or several males without territories.
Daily time
10 min
Related biomes
Breeding
It breeds in caves. The male guards and fans the eggs. With enough shelters it may breed in a community tank, although juveniles increase bioload.
Oviparous
Easy
Machos con tentáculos en la cabeza; hembras mucho menos marcadas
Alerts and health
- Madera natural
- Refugios
- Buena filtración
Common issues
Ich
Hole in the head
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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