Despite its name, the Bala Shark is a peaceful, schooling cyprinid. They are extremely active, fast swimmers that grow very large and startle easily. They are notorious for injuring themselves by crashing into the aquarium glass if kept in small tanks or easily spooked. They must be kept in groups and eventually require massive, custom-sized aquariums.
At a Glance
Tank Requirements
Water Parameters
Temperament & Compatibility
Available Varieties
Each variety inherits the species defaults above. Only differences are highlighted.
Adult (Standard)
The fully grown Bala Shark requires an exceptionally large, long aquarium (6+ feet minimum) to accommodate its active schooling behavior, immense size, and powerful burst swimming.
Differs in 1 trait from base species
Also known as: Full Size, Adult Bala
Juvenile (Grow-out)
Often sold at 5-7cm in pet stores, Bala Sharks grow exceptionally fast. While a smaller 4-foot tank can house them temporarily, they will rapidly outgrow it and need an upgrade to a 150+ gallon tank to prevent stunting and impact injuries.
Differs in 6 traits from base species
Also known as: Baby, Small Bala Shark
Bala Shark Care Guide Summary
The Bala Shark, scientifically known as Balantiocheilos melanopterus, belongs to the Cyprinids family group. Adults reach a maximum size of approximately 35 cm and have a fusiform body shape with a fast growth rate. Classified as mostly peaceful, this species primarily occupies the mid-level and bottom zones of the aquarium and produces a high level of biological waste.
To thrive, the Bala Shark requires a freshwater only aquarium with a minimum volume of 560 litres and a tank length of at least 180 cm. Water temperature should be maintained between 22°C and 28°C, with a pH range of 6–8 and a general hardness of 5–15 dGH. A high water flow is preferred.
The Bala Shark is a rewarding species to keep, provided its core environmental needs are met. This species is available in 2 varieties: Adult (Standard) and Juvenile (Grow-out). Each may differ slightly in size, temperament, or care needs, so it is worth checking the specific requirements of the variety you plan to keep.
Bala Shark Habitat Setup
When setting up an aquarium for the Bala Shark, a high water flow best suits their natural preferences. Because this species occupies the mid-level and bottom zones, the aquarium layout should prioritise open swimming space in the centre of the tank for free movement and sufficient floor space with hiding spots among rocks, wood, or dense planting. Useful additions include smooth gravel or rounded substrate to protect their sensitive barbels. Keepers should note that a tight-fitting lid is essential, as this species is a known jumper.
Bala Shark Compatibility Notes
Classified as mostly peaceful, the Bala Shark is a social species that requires the company of its own kind to thrive. When choosing tankmates, any fish small enough to fit in its mouth will likely be eaten and their energetic swimming style may stress more sedentary or timid species. Selecting tankmates that favour different water layers from the mid-level and bottom zones can help reduce competition and territorial overlap.
Frequently Asked Questions About Bala Shark
How big does Bala Shark get?+
What tank size does Bala Shark need?+
What water parameters does Bala Shark need?+
Is Bala Shark peaceful or aggressive?+
Can Bala Shark live alone?+
Does Bala Shark have any special tank requirements?+
Does Bala Shark need a lid on the tank?+
Similar Species
Rainbow Shark
Epalzeorhynchos frenatum
A popular, active freshwater 'shark' (actually a cyprinid) known for its striking red fins contrasting with a dark or albino body. They are highly territorial bottom-dwellers. Only keep one per tank, as they are notoriously aggressive toward their own kind, other 'sharks' (like the Red Tail Shark), and similar-looking bottom feeders.
Red Tailed Black Shark
Epalzeorhynchos bicolor
A striking and highly active bottom-dwelling cyprinid known for its jet-black body and vibrant red tail. While beautiful, they are notoriously territorial, especially toward their own kind, similar-looking species (like Rainbow Sharks), and sometimes other bottom-dwellers. They must be kept as the only 'shark' in the tank and require a large footprint with plenty of caves and broken sightlines.
Tiger Barb
Puntigrus tetrazona
A highly active, schooling cyprinid famous for its striking black stripes and infamous reputation as a fin-nipper. They are boisterous and must be kept in larger groups (6+) to keep their pecking order internal. They should never be housed with slow-moving or long-finned tankmates like Bettas, Guppies, or Angelfish.
Iridescent Shark
Pangasianodon hypophthalmus
The Iridescent Shark is not a true shark, but a highly active, schooling catfish native to Southeast Asia. While frequently sold as tiny juveniles, they are notorious 'tank busters' that grow to massive sizes. They are extremely skittish and easily spooked, often injuring themselves by crashing into aquarium glass. They are best suited for heated indoor ponds or massive custom aquariums.
Bronze Corydoras
Corydoras aeneus
A highly popular, peaceful schooling catfish known for its armor-like scales (scutes) and active bottom-feeding behavior. They are essential clean-up crew members but require a dedicated sinking diet (not just leftovers). Sand substrate is strictly required to prevent erosion and infection of their sensitive barbels. They are 'gut breathers' and will occasionally dart to the surface to gulp atmospheric air.
Sterba's Corydoras
Corydoras sterbai
A highly popular and peaceful schooling catfish known for its striking white-on-black spotted pattern and bright orange pectoral fins. Uniquely among Corydoras, they thrive in higher temperatures, making them excellent bottom-dwelling companions for warm-water species like Discus. They are obligate shoalers and must be kept on fine sand to prevent the erosion and infection of their delicate barbels.