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Systomus hexazona - Tiger barb/ Six band barb


  • Systomus hexazona - Tiger barb/ Six band barb

    Photo thanks to enoch, tweaked by BrianS

    Scientific name: Systomus hexazona
    Common name: Tiger barb
    AKA: 'Pentazona' Barb/ Six band barb/ Sixband barb
    Mistakenly or previously labelled: Barbus hexazona/ Puntius hexazona/ Puntius johorensis

    Country of origin: South-East Asia Malay Peninsula, Borneo, Sumatra, Singapore

    pH: 4.0 7.0
    Temperature: 20 - 26c
    Hardness: 18 - 90 dGH
    Water flow: high - standard
    Oxygenation: high

    Maximum size: 5.5 cm

    Diet: Live, frozen, flake & pellet foods it is a micropredator. It will benefit from daily live food.

    Males: smaller, slimmer, brighter colours
    Females: larger, rounder, duller colours

    They are an egg scatterer, and if provided with a mop or sufficient moss or plants, they can lay eggs, however they need to be kept from them by a division in the tank, or removal of the eggs or fish. They will not provide any care, so removal of the parents is still the best plan, as they will eat their eggs and fry. Breed in a separate tank in a pair or a group.

    Lifespan: years

    Tank companions:
    They are NOT good tank companions with shrimps.

    They are a schooling species. They should be kept in groups of 8+ to spread the aggression in the group.

    Like other tiger barb species (there are many similar looking fish with this common name), they have a nasty reputation for nipping (particularly other species), but this is often curbed by keeping them in a group. They should not be kept with species with long, trailing fins (such as bettas or paradise fish) for this reason.

    They should be kept with other peaceful species, or they may not be able to feed if the tankmates are too boisterous or aggressive.

    As with any fish they will eat any fish small enough to fit in their mouths, and equally can be eaten by any fish large enough to eat them. This should be taken into account when choosing tankmates.

    Stocking plans can be checked with

    Minimum tank size is 2.5 ft for a small group. More room is needed for a larger group and/or tankmates.

    They could be kept in a heavily planted tank with floating plants to subdue the lighting and open areas for swimming, or a biotype, with tannins, driftwood and heavy planting with crypts and other species.

    Confused with:
    There are other recognised species in the genus, all of which are allowable imports to Australia:
    Systomus hexazona (previously Puntius hexazona) - Tiger Barb/ Sixband barb - clear at back of dorsal fin
    Systomus lateristriga (previously Puntius lateristriga) - Spanner Barb/ T-barb
    Systomus partipentazona (previously Puntius partipentazona) - Tiger barb/ Partipentazona Barb
    Systomus pentazona (previously Puntius pentazona) - Five-banded Barb/ Pentazona barb dark stripe at back of dorsal fin
    Systomus tetrazona (previously Puntius tetrazona) - Tiger Barb, Sumatra Barb

    They are often sold as S. pentazona AKA the five-banded barb. This fish has a small dark mark at the base of the dorsal fin, while S. hexazona does not.

    Until recently these and many other genus were known as Puntius this is still the genus name given on the allowable import list.

    Although these fish are on the allowable import list, there is very little information about them, or evidence that they are being kept or bred in the trade. They are endangered in their natural habitat, and given the lack of information about them being kept by hobbyists or commercially bred, this should be taken into account if making the decision to keep them. Experienced hobbyists with experience in breeding fish may consider keeping them, but they are not a fish for beginners.

    Systomus asoka are legal imports to Australia as of 27/01/2014 (list last updated 16/10/13).

    The IUCN Red List reports Puntius asoka (previous synonym) as a species which has not been assessed yet, at 25/01/2014:

    It is very important not to release any aquarium specimens into our waterways. Any that are not sold or re-homed/ given away, can often be re-sold to aquarium stores. If they are homed in ponds, care should be taken that they cannot escape in run-off into our waterways. Even if fish are native & local they should not be moved from one waterway to another, as this can transfer disease. If they are not local fish, they can both spread disease and either out-compete or eat local fish, shrimp & plants, causing their demise.

    They are good fish for beginners +1.

    Relevant threads:

    Systomus pentazona, Five banded barb:



    Seriously Fish:


    Pics & threads with pics:


    • DiscusEden
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      Photo thanks to enoch, tweaked by BrianS
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