Species profile
Bristlenose Pleco
Ancistrus sp.
Peaceful
Easy care
100 L minimum aquarium
8–12 cm adult size
Bottom
Can be kept singly
About this species
General notes for hobby use.
Generic trade Bristlenose record. Many similar Ancistrus species and long-domesticated lines are sold under this name, so husbandry can be verified while species identity often cannot.
Water parameters
Suggested general range for long-term care.
Temperature
23–27 °C
pH
5.5–8
GH
Up to 20 dGH
KH
Not yet documented
Flow preference
Moderate–high
Data confidence
Verified
Behaviour
General behaviour traits used by TanksConnected compatibility checks.
Minimum group size
Can be kept singly
Tank zone
Bottom
Territory level
Low
Predation risk
None
Bioload factor
1.8
Usually peaceful with other fish. Males may defend caves or feeding areas from other loricariids, so provide multiple retreats if keeping more than one.
Compatibility flags
Quick cautions for common tank-planning issues.
Fin nipper
No
Plant safe
Yes
Shrimp safe
Yes
Snail safe
Yes
Cave breeder
Yes
Digs substrate
No
Jump risk
Low
Natural history & care
Research-backed context for long-term aquarium care.
Lifespan
Not yet documented
Diet type
Herbivore
Minimum aquarium volume
100 L
Minimum footprint
80 × 35 cm
Alternative names
Bristlenose Catfish, Bushynose Pleco, Ancistrus cf. cirrhosus
Native range
Not assignable for this generic trade record because commercially bred Bristlenose lines may not have reliable locality or species provenance.
Natural habitat
Provide mature surfaces for grazing, abundant wood and caves, efficient filtration, high oxygen and moderate current.
Diet & feeding
Primarily plant/algae-grazing. Supplement algae wafers with vegetables and wood; occasional protein-rich foods are acceptable but should not dominate.
Breeding & sexing
Research-backed guidance for identifying sexes and reproductive behaviour.
Sexing
Mature males develop prominent head bristles; females have much smaller or absent snout bristles.
Breeding
Cave spawner. Male occupies and guards a cave, tends the eggs and protects the brood until fry become free-swimming.