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Rasbora kubotai - Green Danio

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  • Rasbora kubotai - Green Danio


    Photo thanks to Danny

    Name:
    Scientific name: Rasbora kubotai - Green Danio
    Common name: Green Danio
    AKA: Neon Yellow,Microrasbora kubotai, Microdevario Kubotai

    Country of origin:
    Southeast Asia - Thailand

    pH: 6.0 - 7.0
    Temperature: 22 - 27c
    Hardness: 18 - 179 ppm
    Water flow: Moderate to high
    Oxygenation: High

    Maximum size: 1.5 - 2cm. Piranah shaped.

    Diet: As such a small fish it requires crushed flake or tiny pellets. It does well on Aquagreen's fish food (which is a crushed powder), or other tiny crushed food. They appreciate live food such as BBS (baby brine shrimp or black worms if they are crushed to size, but will readily take frozen or dried. They will take shrimplets to a moderate size if kept with shrimp. They do benefit from some live food.

    Breeding: 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, otherwise they will eat the eggs or fry.

    Tank companions: Actively hunt shrimplets to about 2 weeks. In a large (4ft+ heavily planted tank) with an established large population of shrimp, the losses may be able to be sustained, however in a small (2ft or less tank), it would wipe out the shrimp population or stop it growing at best.
    Other microfish are suitable tankmates. I have kept them with bororas; danios; chocolate, liquorice & sparkling gouramis; green neon & ember tetras; male endlers and royal whiptails. Although it does hunt shrimp, and would hunt eggs and fry, given the opportunity, it is a reasonably peaceful (in the sense of not troublemaking) tankmate. It has not been observed to nip fins. It is an active fish, and will be assertive at feeding time, so that more shy fish, such as the boraras brigittae & other boraras have to be fed at the other end of the tank.

    They are neon glowing almost see-through fish. They swim at mid-level when not hunting and are quite bold. They don't school well, although they are best shown in groups.

    Being an active fish, they would need at least a 1.5ft tank, despite their small size.

    Rasbora kubotai are NOT legal imports to Australia as of 20/10/2013:
    http://www.environment.gov.au/biodiv...mport-list.pdf
    however they may have been on previous import lists, have entered Australia prior to the implementation of import lists, or been misidentified on importation.

    The IUCN Red List reports Rasbora kubotai as a species which has not yet been assessed at 20/10/2013:
    http://www.iucnredlist.org/search

    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 a good fish for experienced hobbyists.


    Photo thanks to DiscusEden
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