Species profile
Sixray Corydoras
Gastrodermus pauciradiatus
Peaceful
Moderate care
60 L minimum aquarium
2.5–4 cm adult size
Bottom–mid
Minimum group: 8
About this species
General notes for hobby use.
Accepted genus updated from Aspidoras to Gastrodermus. Small, social and better kept in a real group on fine substrate.
Water parameters
Suggested general range for long-term care.
Temperature
22–26 °C
pH
6–7.2
GH
2–12 dGH
KH
Not yet documented
Flow preference
Low–moderate
Data confidence
Verified
Behaviour
General behaviour traits used by TanksConnected compatibility checks.
Minimum group size
Minimum group: 8
Tank zone
Bottom–mid
Territory level
None
Predation risk
Tiny fry
Bioload factor
0.5
Peaceful, active small catfish; group maintenance improves confidence and natural foraging.
Compatibility flags
Quick cautions for common tank-planning issues.
Fin nipper
No
Plant safe
Yes
Shrimp safe
Yes
Snail safe
Yes
Cave breeder
No
Digs substrate
Yes
Jump risk
Low
Natural history & care
Research-backed context for long-term aquarium care.
Lifespan
Not yet documented
Diet type
Omnivore
Minimum aquarium volume
60 L
Minimum footprint
60 × 30 cm
Accepted scientific name
Gastrodermus pauciradiatus
Alternative names
Aspidoras pauciradiatus, Sixray Corydoras, Six-ray Cory
Native range
Araguaia River basin, Brazil.
Natural habitat
Fine sand, leaf litter/wood and clean oxygen-rich water. Provide shaded retreats but plenty of open foraging space.
Diet & feeding
Small sinking foods and live/frozen micro-invertebrates; not a substitute for algae control.
Breeding & sexing
Research-backed guidance for identifying sexes and reproductive behaviour.
Sexing
Mature females become deeper and broader; males remain slimmer.
Breeding
Corydoradinae-style T-position spawning with adhesive eggs; adults do not provide brood care.