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.
Cigar Shark (Mad Barb) At a Glance
Cigar Shark (Mad Barb) Tank Requirements
Will Cigar Shark (Mad Barb) fit in your tank?
Care guides tell you what Cigar Shark (Mad Barb) needs, the next question is whether your tank can safely provide it. Test Cigar Shark (Mad Barb) against your tank size, maintenance needs, and the fish you already keep before you buy.
Cigar Shark (Mad Barb) Water Parameters
Cigar Shark (Mad Barb) Temperament & Compatibility
Cigar Shark (Mad Barb) Varieties
Each variety inherits the species defaults above. Only differences are highlighted.
Standard (Adult)
Same care requirements as the base species
Also known as: Adult Cigar Shark, Full Grown
Juvenile (Grow-out)
Differs in 3 traits from base species
Also known as: Baby Cigar Shark
Cigar Shark (Mad Barb) Care Guide Summary
The Cigar Shark (Mad Barb), scientifically known as Leptobarbus hoevenii, belongs to the Cyprinids family group. Adults reach a maximum size of approximately 60 cm and have a fusiform body shape with a fast growth rate. Classified as mostly peaceful, this species primarily occupies the mid-level and surface zones of the aquarium and produces a extreme level of biological waste.
To thrive, the Cigar Shark (Mad Barb) requires a freshwater only aquarium with a minimum volume of 1000 litres and a tank length of at least 240 cm. Water temperature should be maintained between 23°C and 28°C, with a pH range of 6–8 and a general hardness of 4–15 dGH. A high water flow is preferred.
The Cigar Shark (Mad Barb) is a rewarding species to keep, provided its core environmental needs are met. This species is available in 2 varieties: Standard (Adult) 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.
Cigar Shark (Mad Barb) Habitat Setup
When setting up an aquarium for the Cigar Shark (Mad Barb), a high water flow best suits their natural preferences. Because this species occupies the mid-level and surface zones, the aquarium layout should prioritise adequate surface area with floating cover to make them feel secure near the waterline and open swimming space in the centre of the tank for free movement. 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 and live planted layouts may be difficult to maintain, as this species tends to uproot or consume vegetation.
Cigar Shark (Mad Barb) Compatibility Notes
Classified as mostly peaceful, the Cigar Shark (Mad Barb) is adaptable and can be kept singly or in a small group, offering flexibility when planning a community tank. When choosing tankmates, any fish small enough to fit in its mouth will likely be eaten, shy or slow-feeding tankmates may be outcompeted at feeding time, and their energetic swimming style may stress more sedentary or timid species. Selecting tankmates that favour different water layers from the mid-level and surface zones can help reduce competition and territorial overlap.
Who Cigar Shark (Mad Barb) Is Actually For
Cigar Shark (Mad Barb) 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 3. It makes the most sense for a hobbyist who will actually build around its needs, especially smooth gravel.
The most common mistake is buying Cigar Shark (Mad Barb) 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.
Cigar Shark (Mad Barb) Feeding & Diet Considerations
The Cigar Shark (Mad Barb) is a predatory species that will readily consume small fish, so nano or bite-sized tankmates should be avoided and is an aggressive eater that may prevent timid tankmates from getting enough food, so target feeding or simultaneous feeding at opposite ends of the tank can help.
Frequently Asked Questions About Cigar Shark (Mad Barb)
How big does Cigar Shark (Mad Barb) get?
Cigar Shark (Mad Barb) (Leptobarbus hoevenii) typically reaches a maximum adult size of approximately 60 cm. They have a fusiform body shape and a fast growth rate.
What tank size does Cigar Shark (Mad Barb) need?
A minimum aquarium volume of 1000 litres and a tank length of at least 240 cm are recommended for Cigar Shark (Mad Barb). This ensures enough swimming space and helps maintain stable water conditions.
What water parameters does Cigar Shark (Mad Barb) need?
Cigar Shark (Mad Barb) thrives in freshwater only conditions with a temperature range of 23–28°C, a pH between 6 and 8, and a general hardness of 4–15 dGH. A high water flow is preferred.
Is Cigar Shark (Mad Barb) peaceful or aggressive?
Cigar Shark (Mad Barb) is classified as mostly peaceful with an aggression score of 4 out of 10. They are generally well-suited to peaceful community tanks.
Can Cigar Shark (Mad Barb) live alone?
Yes, Cigar Shark (Mad Barb) can be kept singly or in a group. They are flexible and adapt well to both setups.
Does Cigar Shark (Mad Barb) have any special tank requirements?
Yes. Cigar Shark (Mad Barb) benefits from smooth gravel (sensitive barbels) in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.
Does Cigar Shark (Mad Barb) need a lid on the tank?
Yes. Cigar Shark (Mad Barb) 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.
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Guidarium Editorial Desk
Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.
- Last reviewed
- May 3, 2026
- Last updated
- May 3, 2026
- Issues or corrections?
- Contact the editorial team
Top Tank Mates for Cigar Shark (Mad Barb)
These fish are strong compatibility matches for Cigar Shark (Mad Barb) based on water preferences, temperament, adult size, and tank behavior.
Reticulated Stingray (Teacup Ray)
Potamotrygon orbignyi
Ideal Tank MatesRaspy River Stingray
Potamotrygon scobina
Ideal Tank MatesTandanus Catfish
Tandanus tandanus
Ideal Tank MatesPetricola Catfish
Synodontis petricola
Ideal Tank MatesGold Spot Pleco (L001 / L022)
Pterygoplichthys joselimaianus
Ideal Tank MatesMottled Loach
Paracanthocobitis botia
Ideal Tank MatesPlants That Suit Cigar Shark (Mad Barb)
These plants pair well with Cigar Shark (Mad Barb) 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
African Onion Plant
Crinum calamistratum
Afzel's Anubias
Anubias afzelii
Anubias Barteri
Anubias barteri
Fish Similar to Cigar Shark (Mad Barb)
Freshwater Shark (Wallago)
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An apex predator native to South and Southeast Asia, infamous for its immense size, huge mouth, and voracious predatory nature. It will consume any tank mate that fits into its capacious mouth and is known to bite aggressively when handled. This species is utterly unsuitable for standard home aquariums and requires an enormous custom pond or public aquarium setup.
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An apex predator native to the Mekong and Chao Phraya basins. This true 'monster fish' is completely unsuitable for home aquariums. They grow to massive proportions, are highly active, and easily startled—often severely injuring themselves by crashing into tank walls. They possess a massive appetite and are highly piscivorous, consuming any tank mate that fits in their mouth.
Shortbarbel Pangasius
Pangasius micronemus
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The Tambraparni Barb (now scientifically classified as Dawkinsia tambraparniei) is a medium-sized, highly active schooling fish native to the fast-flowing rivers of the Western Ghats in India. Known for their shimmering silver bodies adorned with striking dark blotches, they require a spacious aquarium with high water flow and high dissolved oxygen. While peaceful, their boisterous swimming can stress shy tank mates.
Helicopter Catfish
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A massive, apex predator catfish native to Southeast Asia. Known for its enormous mouth and voracious appetite, this 'monster fish' is completely unsuitable for standard home aquariums. In the wild, they migrate through large rivers and flooded forests. They will consume any tankmate that fits in their massive mouth. Kept almost exclusively by specialized monster fish keepers or public aquaria.



