Swordtails in a low tech tank? (no filter but with a lamp) It is heavily planted (pearl weed). I know guppys could live under these conditions, can swordtails too, has anyone experimented with that before?

Posted by I_collect_dust

7 Comments

  1. I_collect_dust on

    I had Japanese rice fish (Medaka) before, but I would prefer livebearers that easily reproduce by themselves this time

  2. Looks great! Yes, they should be fine as long as it doesn’t get too cold. Might want to drop your water level a little as they can get pretty feisty once they get in breeding condition.

  3. I think it would very much depend on the size of the tank and the level of stocking. If the aquarium is big enough and the fish are small and few for the water volume, it’s very certainly viable.

    So yes, but with caveats. The example picture you posted is too small for a sustainable setup especially if they’ll be breeding. Scale. A much much larger aquarium with more plants could work long-term. Do some more research on running these kinds of set-ups (see “The Ecology of the Planted Aquarium” and people who run so-called Walstad tanks).

    Also, don’t Swordtails usually need heated water? You may be in a tropical or sub-tropical region but if not, they don’t like cold temps like medaka.

  4. With low enough stocking, plants, a clean up crew and the right substrate (lots of sand on top of soil works for most) any fish can be kept without a filter. You might need a heater depending where you live and having an airstone on hand just in case they struggle with the amount of oxygen. 

  5. Is this a picture of the tank you want to put them in? I wouldn’t put swordtails in anything less that a 20 gallon if you want to go filter less, you could get away with about 3 of them in a 10 gallon IF it has a filter to take care of waste and oxygenate the water but they’re big fish compared to guppies

  6. Substantial-Sea-3672 on

    I love when people ask these questions and only engage with contents that say, “yes!”

    Why even ask?

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