Bala Shark
Balantiocheilos melanopterus
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.
Bala Shark At a Glance
Bala Shark Tank Requirements
Will Bala Shark fit in your tank?
Care guides tell you what Bala Shark needs, the next question is whether your tank can safely provide it. Test Bala Shark against your tank size, maintenance needs, and the fish you already keep before you buy.
Bala Shark Water Parameters
Bala Shark Temperament & Compatibility
Bala Shark 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.
Who Bala Shark Is Actually For
Bala Shark is best for a fishkeeper who wants a species that can settle into a calmer community setup and can provide a keeper who can commit to a proper group of at least 5. It makes the most sense for a hobbyist who will actually build around its needs, especially smooth gravel.
The most common mistake is buying Bala Shark for looks first and only later discovering how its adult size, behavior, or bioload changes the whole tank plan. Another frequent problem is underestimating its social needs. A token pair or trio often behaves very differently from a real group.
Bala Shark Recommended Tank Sizes
Standard aquarium sizes that meet the minimum volume and length requirements for Bala Shark.
Frequently Asked Questions About Bala Shark
How big does Bala Shark get?
Bala Shark (Balantiocheilos melanopterus) typically reaches a maximum adult size of approximately 35 cm. They have a fusiform body shape and a fast growth rate.
What tank size does Bala Shark need?
A minimum aquarium volume of 560 litres and a tank length of at least 180 cm are recommended for Bala Shark. This ensures enough swimming space and helps maintain stable water conditions.
What water parameters does Bala Shark need?
Bala Shark thrives in freshwater only conditions with a temperature range of 22–28°C, a pH between 6 and 8, and a general hardness of 5–15 dGH. A high water flow is preferred.
Is Bala Shark peaceful or aggressive?
Bala Shark is classified as mostly peaceful with an aggression score of 3 out of 10. They are generally well-suited to peaceful community tanks.
Can Bala Shark live alone?
No, Bala Shark should be kept in groups of at least 5 to reduce stress and encourage natural behaviour.
Does Bala Shark have any special tank requirements?
Yes. Bala Shark benefits from smooth gravel (sensitive barbels) in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.
Does Bala Shark need a lid on the tank?
Yes. Bala Shark is a known jumper, and a tight-fitting lid or cover is essential to prevent escape. Even a small gap can be enough for a determined fish to leap out.
Useful setup supplies
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Guidarium Editorial Desk
Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.
- Last reviewed
- April 28, 2026
- Last updated
- April 28, 2026
- Issues or corrections?
- Contact the editorial team
Top Tank Mates for Bala Shark
These fish are strong compatibility matches for Bala Shark based on water preferences, temperament, adult size, and tank behavior.
Celebes Halfbeak
Nomorhamphus liemi
Ideal Tank MatesWrestling Halfbeak
Dermogenys pusilla
Ideal Tank MatesScissortail Rasbora
Rasbora trilineata
Ideal Tank MatesRosy Red Minnow / Fathead Minnow
Pimephales promelas
Ideal Tank MatesSpotted Hillstream Loach
Gastromyzon punctulatus
Ideal Tank MatesSunset Platy (Variatus Platy)
Xiphophorus variatus
Ideal Tank MatesPlants That Suit Bala Shark
These plants pair well with Bala Shark based on shared water preferences, layout fit, and how likely they are to hold up in the same aquarium.
African Water Fern
Bolbitis heudelotii
Boivin's Aponogeton
Aponogeton boivinianus
Capuron's Aponogeton
Aponogeton capuronii
Madagascar Lace Plant
Aponogeton madagascariensis
African Onion Plant
Crinum calamistratum
Afzel's Anubias
Anubias afzelii
Fish Similar to Bala Shark
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.
Harlequin Shark
Labeo variegatus
The Harlequin Shark (scientifically valid as Labeo cyclorhynchus, though commonly sold as L. variegatus) is a highly territorial, bottom-dwelling cyprinid native to the Congo River basin. Famous for the spectacular cream and black mottling of juveniles, their colors sadly fade to a darker tone as they mature. They are voracious algae and aufwuchs grazers that require high water flow, smooth substrate to protect their delicate barbels, and must absolutely be kept as a solitary specimen due to their extreme intolerance of conspecifics and other bottom-dwellers.
Cigar Shark (Mad Barb)
Leptobarbus hoevenii
A massive, incredibly active schooling fish native to Southeast Asian rivers. Despite the 'shark' moniker, it is a giant cyprinid (carp). It grows exceptionally large and fast, requiring massive aquariums or heated ponds. Known as the 'Mad Barb' due to its erratic swimming and tendency to jump when startled. They are omnivorous and will eat anything that fits in their mouth, including smaller fish and plants.
Five Banded Barb
Desmopuntius pentazona
A small, peaceful, and beautifully colored schooling cyprinid native to the blackwater peat swamps of Southeast Asia. Often confused with the much more aggressive Tiger Barb, the Five Banded Barb is entirely peaceful and will not nip fins. They are somewhat shy and require a well-planted tank with dim lighting or floating plants to feel secure and show their best reddish-orange colors.