Balantiocheilus melanopterus
The bala shark is a large, silver cyprinid with black-edged fins—often sold as a small juvenile but capable of exceeding 30 cm in spacious aquaria. It is a powerful swimmer that needs a long, wide tank with open water and a secure lid; groups reduce skittishness and pacing. Peaceful toward many community fish but will eat fish small enough to swallow as it grows. Not suitable for typical small starter tanks.
Large pellets and flakes; frozen krill and shrimp; vegetable matter; feed varied diet as adults need bulk.
Frequency: 2× daily
Juveniles accept small foods; adults need proportionally larger sinking items.
Native Region: Southeast Asia (Sumatra, Borneo, Malay Peninsula)
Large rivers and lakes with open water and submerged wood.
Minimum six for welfare in adequate volume; powerful filtration; no sharp decor.
Activity Level: High
Schooling Size: 6+ recommended
Nervous when alone or in short tanks—may glass-surf or jump; dimmable lighting helps.
Difficulty: Difficult
Type: Egg scatterer
Sexual Dimorphism: Mature females deeper-bodied; difficult to sex young.
Commercial breeding rare; pond-scale facilities abroad.
Substrate: Either
Plant Safe: Yes
Open central swim lane; tall plants at back and sides for security.
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