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upside-down catfish ?

Discussion in 'Fish Keeping Chat' started by ....zoe...., Dec 29, 2010.


  1. ....zoe....

    ....zoe.... PetForums VIP

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    i was just wondering if upside-down catfish, are permenantly upside down or if they revert to normal position when swimming around the tank ?

    the reason why i am asking is that ive aquired a new catfish today but the old owner didnt know what it was and i am stuck between an upside-down or a type of synodontis sp
     
  2. Chillinator

    Chillinator Guest

    Upside-Down Catfish are a species of Synodontis, specifically Synodontis nigriventris. They rarely swim in an upright fashion.

    Many people are confused as to why these fish swim upside down. The reason is very simple: it's the feeding habits. S. nigriventris feeds primarily on insects that land on the water surface and also on trapped plant matter and detritus on the undersides of submerged logs. Swimming upside down adapts this species of Syno to this behaviour, since most catfish have inferior (downward-facing) mouths.
     
  3. ....zoe....

    ....zoe.... PetForums VIP

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    ive managed to get a picture :) any ideas ???
    [​IMG]
     
  4. Chillinator

    Chillinator Guest

    The fish in the photo is most likely Synodontis euptera, not S. nigriventris. However, there's so many differences between the locales of different species and then there's the problem with hybridization which has made differentiating one species from another more difficult.
     
  5. ....zoe....

    ....zoe.... PetForums VIP

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    thats what i thought :) and through my research i have found they can become territorial and grow to a fairly big size, but luckily already have a home for it if it begins causing problems in my tank. :thumbup:
     
  6. holly1

    holly1 PetForums VIP

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    All synos will have a go at swimming up side down.My syno polli do it on a water change,when the water level is lower than normal.
    The majority of the time,they spend on the bottom
     
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