Species profile
Chinese Algae Eater
Gyrinocheilus aymonieri
Semi aggressive
Moderate care
300 L minimum aquarium
20–25 cm adult size
Bottom–mid
Can be kept singly
About this species
General notes for hobby use.
Large territorial rheophilic grazer; juvenile algae-eating reputation hides a substantial adult fish with very different community behaviour.
Water parameters
Suggested general range for long-term care.
Temperature
18–28 °C
pH
6–8
GH
Up to 20 dGH
KH
Not yet documented
Flow preference
High
Data confidence
Verified
Behaviour
General behaviour traits used by TanksConnected compatibility checks.
Minimum group size
Can be kept singly
Tank zone
Bottom–mid
Territory level
High
Predation risk
None
Bioload factor
2.8
Adults can harass slow or broad-bodied tankmates and may become strongly territorial. High oxygen and current suit its natural ecology.
Compatibility flags
Quick cautions for common tank-planning issues.
Fin nipper
No
Plant safe
Caution
Shrimp safe
No / caution
Snail safe
Yes
Cave breeder
No
Digs substrate
No
Jump risk
Yes
Natural history & care
Research-backed context for long-term aquarium care.
Lifespan
Not yet documented
Diet type
Omnivore
Minimum aquarium volume
300 L
Minimum footprint
120 × 50 cm
Accepted scientific name
Gyrinocheilus aymonieri
Alternative names
Chinese Algae Eater, Sucking Loach, Indian Algae Eater
Native range
Mainland Southeast Asia, including Mekong, Chao Phraya and related drainage systems.
Natural habitat
Fast-flowing rivers and streams where the specialised mouth adheres to hard surfaces in current.
Diet & feeding
Juveniles graze algae and aufwuchs heavily; adults broaden into a general omnivorous diet and require prepared and protein foods as well.
Breeding & sexing
Research-backed guidance for identifying sexes and reproductive behaviour.
Sexing
External sexing is difficult; mature females may be fuller-bodied.
Breeding
Commercial propagation occurs, but reliable routine home-aquarium spawning information is limited.