Species profile
Bala Shark
Balantiocheilos melanopterus
Peaceful
Hard care
900 L minimum aquarium
30–40 cm adult size
Midwater
Minimum group: 6
About this species
General notes for hobby use.
Very large, fast, nervous shoaling cyprinid; adult groups require public-aquarium-scale swimming room compared with typical retail tanks.
Water parameters
Suggested general range for long-term care.
Temperature
22–28 °C
pH
6–8
GH
5–20 dGH
KH
Not yet documented
Flow preference
High
Data confidence
Verified
Behaviour
General behaviour traits used by TanksConnected compatibility checks.
Minimum group size
Minimum group: 6
Tank zone
Midwater
Territory level
None
Predation risk
Tiny fry
Bioload factor
3.2
Strong schooling instinct and extreme startle response. A secure cover, long unobstructed runs and high oxygenation are essential.
Compatibility flags
Quick cautions for common tank-planning issues.
Fin nipper
No
Plant safe
Yes
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
900 L
Minimum footprint
200 × 70 cm
Accepted scientific name
Balantiocheilos melanopterus
Alternative names
Bala Shark, Silver Shark, Tricolor Shark
Native range
Southeast Asia, historically from large river systems of Sumatra, Borneo and the Malay region.
Natural habitat
Large rivers and associated waters; an active pelagic swimmer rather than a small benthic 'shark'.
Diet & feeding
Generalist omnivore taking plant material, small invertebrates and prepared foods; feed a varied diet across the water column.
Breeding & sexing
Research-backed guidance for identifying sexes and reproductive behaviour.
Sexing
Sexual dimorphism is weak; mature females may become fuller-bodied.
Breeding
Home-aquarium breeding is not routine; commercial production uses facilities and methods beyond normal hobby conditions.